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Audio Research Classic 60 Power Amplifier

End: 06.02. 2025 09:12:55 on Thursday
  • Condition: Used
  • Price: 1463.32 EUR Auktion
  • Status: unsold
  • Item number: 135525223500
  • Bids: 0
  • Seller: us.amek (1163|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY

Audio Research Classic 60 Power Amplifier

End: 30.01. 2025 09:12:33 on Thursday
  • Condition: Used
  • Price: 1463.53 EUR Auktion
  • Status: unsold
  • Item number: 135513395298
  • Bids: 0
  • Seller: us.amek (1162|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY

Audio Research Classic 60 Power Amplifier

End: 23.01. 2025 09:11:25 on Thursday
  • Condition: Used
  • Price: 1463.6 EUR Auktion
  • Status: unsold
  • Item number: 135501129108
  • Bids: 0
  • Seller: us.amek (1161|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Fidelity Research K-5 Cartridge Case Vintage Audio Accessory

End: 22.01. 2025 19:37:13 on Wednesday
  • Condition: Used
  • Price: 125.0 EUR FESTPREIS
  • Status: unsold
  • Item number: 316079429883
  • Seller: handpicks0412 (233|98.3%)
  • Seller information: Commercial (with base shop)
  • Item location: TOKYO Japan
  • Ships to: US
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    Fidelity Research K-5 Cartridge Case Vintage Audio AccessoryKey FeaturesPlease check the condition of the product in the pictures.SpecificationsBrandFidelity ResearchCountryJapanTypecartridgeFeaturescartridgeProduct DescriptionProduct Description If you have any questions or concerns please feel free to contact us. Thank you for visiting.Shipping We offer worldwide shipping via EMS DHL or FEDEX. Estimated delivery time: approximately 10 days.Order Processing and Processing Time Orders are shipped within 5 business days after payment is confirmed (excluding Saturdays Sundays and holidays).Manuals & Menu Language This item is designed for the Japanese market and includes only a Japanese manual and menu language. For more information please contact us.Warranty This product includes a Japanese warranty only. To have the item repaired under warranty it must be sent to Japan at the buyer’s expense. If this is an issue we recommend not purchasing the item.For International CustomersWe ship from Japan.Import duties taxes (e.g. VAT GST) and handling fees are not included in the item price or shipping charges.These costs are the buyers responsibility.Please check these costs with customs in advance of purchase.Typically these additional costs are charged by the carrier upon delivery.Customs declarations are completed accurately with no undercharging or marking items as gifts. Thank you for your understanding and cooperation.

Audio Research Classic 60 Power Amplifier

End: 16.01. 2025 09:11:12 on Thursday
  • Condition: Used
  • Price: 1479.79 EUR Auktion
  • Status: unsold
  • Item number: 135490074600
  • Bids: 0
  • Seller: us.amek (1160|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Acoustic Research 3 Ft Blue Audio RCA Cable Male to Male 3-prongs high def AS-IS

End: 15.01. 2025 13:58:04 on Wednesday
  • Condition: Used
  • Price: 11.34 EUR FESTPREIS
  • Status: unsold
  • Item number: 365179500385
  • Seller: truetreas-0 (362|99.7%)
  • Seller information: Commercial (with base shop)
  • Item location: Summerville, South Carolina USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    Acoustic Research 3 Ft Blue Audio RCA Cable Male to Male 3-prongs high def AS-IS Reasonable returns accepted within 30 days of purchase in the contiguous United StatesQuestions? Please askThanks for viewing our listing and supporting our small business!

Fidelity Research K-5 Cartridge Case - /Used Audio Accessories

End: 14.01. 2025 19:32:57 on Tuesday
  • Condition: Used
  • Price: 126.91 EUR FESTPREIS
  • Status: unsold
  • Item number: 226501851052
  • Seller: japan-good-goods (1124|97.8%)
  • Seller information: Commercial (with base shop)
  • Item location: Tokyo Japan
  • Ships to: Worldwide
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    Fidelity Research K-5 Cartridge Case - /Used Audio AccessoriesKey FeaturesNO DESCRIPTIONSpecificationsBrandFidelity ResearchCountryJapanProduct DescriptionItem TitleFidelity Research K-5 Cartridge Case Payment Supports managed payments Please pay within 5 days after auction is finished. About Us We are located in Japan. Its our pleasure to make you happy by proposing our recommend item. If you have any questions or request about items please feel free to ask us. International Buyers - Please Note: -Import duties taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. -Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. -These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges. -We do not mark merchandise values below value or mark items as - gifts - The US and International government regulations prohibit such behavior. Thank you for your understanding.

Audio Research REFERENCE 5SE Tube Preamplifier w/ Home Theater Bypass

End: 14.01. 2025 15:20:37 on Tuesday
  • Condition: Used
  • Price: 7659.12 EUR FESTPREIS
  • Status: unsold
  • Item number: 186871665609
  • Seller: salon-1-audio (1943|100.0%)
  • Seller information: Commercial (with base shop)
  • Item location: Ormond Beach, Florida USA
  • Ships to: US
  • Shipping: 45,0 EUR
  • on EBAY
  • Description

    When Audio Research built the Reference 1 preamp, it was the very best preamplifier they could build with currently available technology. Over the years as better components became available, successive models improved on performance, opening up new world of realism in audio systems. The REF 5SEs revealing sound is very close to the current 6SE which now retails for $22,500. Even at half of that price the 5SE would be a fantastic steal as it has the same DNA and signature transparency and revealing emotional impact.If your ready to hear your music open up, come to life, and completely revealed more than ever before, you owe it to yourself to experience the Ref 5SE. Read the reviews and see what your missing.This unit was acquired from a local client who loved his gear with great care. Lets just say this unit is indiscernible from a brand new unit. The original remote, manual, box / packing, and certificate of inspection are included. You wont find a cleaner and nicer REF 5SE preamp.FEATURES:Tubed preamplifier with six sets of balanced and unbalanced inputsThree sets of balanced and unbalanced outputsUnity-gain Processor input (Home theater bypass)Tube complement: 6550C and 6H30P (power-supply regulation)Four 6H30P (dual triodes).Frequency response: 0.2Hz–200kHz, +0/–3dB, at rated output (balanced, 200k ohms load).Maximum voltage gain, main output (single-ended or balanced input): 12dB, balanced output; 6dB, single-ended output.Distortion: <0.01% at 2V RMS, balanced output.Input impedance: 120k ohms balanced, 60k ohms single-ended.Output impedance: 600 ohms balanced, 300 ohms single-ended main, 20k ohms minimum load and 2000pF maximum capacitance.Output polarity: non-inverting.Maximum input: 20V RMS maximum balanced, 10V RMS single-ended.Rated output: 2V RMS (1V RMS single-ended) into 200k ohm balanced load (maximum balanced output capability is 30V RMS at <0.5% THD at 1kHz).Noise: 1.7µV RMS residual IHF-weighted balanced noise output with volume control at 1 (109dB below 2V RMS output).Power consumption: standby, 2W; full output, 130W.Dimensions: 19 (485mm) W by 7 (178mm) H by 15.5 (394mm) D. Handles extend 1.5 (38mm) forward of front panel.Weight: 30.4 lbs (13.9kg) net, 41.6 lbs (19kg) shippingRetailed for $13,000

Audio Research Classic 60 Power Amplifier

End: 09.01. 2025 09:11:02 on Thursday
  • Condition: Used
  • Price: 1480.51 EUR Auktion
  • Status: unsold
  • Item number: 135478129082
  • Bids: 0
  • Seller: us.amek (1156|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

2x Copulare Tonbasen Aural Sonderanfertigung für Audio Research Reference 600

End: 05.01. 2025 23:07:04 on Sunday
  • Condition: Used
  • Price: 799.0 EUR FESTPREIS
  • Status: unsold
  • Item number: 375884999980
  • Seller: schoenklinger (19753|99.8%)
  • Seller information: Commercial
  • Item location: Gelsenkirchen Deutschland
  • Ships to: Worldwide
  • Shipping: 40,0 EUR
  • on EBAY
  • Description

    2x Copulare Tonbasen Aural Sonderanfertigung für Audio Research Reference 600Heute biete ich Ihnen folgendes an: 2x Copulare Tonbasen Aural Sonderanfertigung für Audio Research Reference 600 Endstufen / hoch belastbar Die passenden Endstufen habe ich in einem anderen Inserat. Man kann aber auch ähnliche Geräte / Endstufen auf diese Tonbasen abstellen. Die Unterlegscheiben für die Spikes sind mit dabei. Auflagefläche 89,5 cm tief X 48,5 cm breit Die Höhe beträgt 20 cm (+ - 1 cm variabel) technischer Zustand: guter Zustand optischer Zustand: geringe optische Gebrauchsspuren Falls Sie den oben aufgeführten Artikel ersteigern und diesen persönlich bei mir abholen, so können wir diesen sehr gerne gemeinsam auf den von mir angegebenen Zustand hin überprüfen. Kein Versand an Packstationen oder Paketshops !!! No shipping to USA

Hall Research VSA-X21 HDBASet Receiver with Audio Power Amp

End: 04.01. 2025 01:52:01 on Saturday
  • Condition: Used
  • Price: 380.98 EUR FESTPREIS
  • Status: unsold
  • Item number: 375335896210
  • Seller: tradelabz (1007|99.4%)
  • Seller information: Commercial (with base shop)
  • Item location: Los Angeles, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    TRADELABZNew and Used Gear: We prioritize the quality of our gear with utmost seriousness. As rare components become increasingly scarce, we adopt stringent procedures to maintain integrity within our eBay community. Every component we handle is individually marked and cataloged, ensuring smooth transactions post-sale. We rigorously test our gear before listing and once again before dispatch. Additionally, during shipment preparation, we photograph each component using a macro lens to document any unique features, aiding our record-keeping. Feel free to check our feedback for customer testimonials.Tubes: We prioritize the quality of our tubes with utmost seriousness. As rare tubes become increasingly scarce, we adopt stringent procedures to maintain integrity within our eBay community. Every tube we handle is individually marked and cataloged, ensuring smooth transactions post-sale. We rigorously test each tube before listing and once again before dispatch. Additionally, during shipment preparation, we photograph each tube using a macro lens to document any unique features, aiding our record-keeping. Feel free to check our feedback for customer testimonials. Combined shipping: Once your order is placed, well go ahead and send over a revised invoice. Our return policy. Shipping Consolidation: Once your order is confirmed, well promptly send a revised bill reflecting the combined shipping costs. Return Guidelines: New Items: If an item sold as new is returned in a used state, we, under no conditions, can accept the return. Pre-owned Items: We maintain a strict 30-day return policy. Returns will only be entertained if the buyer can provide a valid reason as per the eBay 30-day money-back guarantee. In all other instances, a 15% restocking fee will be applicable. Items Sold For Parts: We cannot accept returns on items sold as-is for parts. Who we are: TRADELABZ, a leading authority in precision test equipment. We are more than a company - we are a collection of passionate individuals unified by a vision to revolutionize the way tangible assets are traded globally. Our sphere of influence stretches across an impressive array of sectors. From state-of-the-art physics laboratories and distinguished universities to pioneering neural research facilities and high-impact bionuclear research organizations, we provide unrivaled support and services to a broad spectrum of clients. Our reach may be expansive, but our commitment to each client remains personal and profound. Headquartered in the vibrant state of California, we currently serve a rapidly growing list of elite clientele based throughout the United States. But our ambition transcends boundaries. We are in the process of expanding our horizon and establishing our mark on a global scale. Welcome to the new era of precision. Welcome to TRADELABZ.

Audio Research Classic 60 Power Amplifier

End: 02.01. 2025 09:10:47 on Thursday
  • Condition: Used
  • Price: 1472.72 EUR Auktion
  • Status: unsold
  • Item number: 135465691745
  • Bids: 0
  • Seller: us.amek (1155|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research DAC-9 Tube D/A Converter, Silver - Most Current Release

End: 26.12. 2024 15:46:30 on Thursday
  • Condition: Used
  • Price: 5134.06 EUR FESTPREIS
  • Status: sold
  • Item number: 196911615005
  • Seller: soulpianoman (340|100.0%)
  • Seller information: non commercial
  • Item location: Loveland, Colorado USA
  • Ships to: US
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    This is the most current, state-of-the-art, vacuum-tube DAC offered by Audio Research. Current retail is $12,000. The DAC functions as designed with no issues. The unit was sent back to Audio Research in 2021 for a check-up, and also had the newest USB board installed. The technicians found no issues upon bench testing. The tube hours stand at 2176 and are good for 4000 hours. This DAC functions with 120V from the outlet but can be converted to 220v. This DAC sounds incredibly natural, spacious and resolving, with a deep, wide sound stage and great bass. All the original packaging is included along with the hefty remote and owners manual. It will be double boxed with tubes packed and removed for shipping. Thanks for looking! ---- From Audio Research Website: Digital that sounds like analogDigital advances quickly and Audio Research continues to stay at the performance forefront.Our perspective and love for analog reproduction helps make our digital components sound superior musically. The DAC9 is a vacuum-tube analog section combined with the latest digital design, capable of decoding DSD music files and PCM files up to 384kHz. Selectable digital filters & quad D-A convertersAudio Research designed two separate data paths to the DAC9’s D-A converters: one for PCM files, and another to handle serial DSD files at 1x and 2x DSD clock rates. This assures proper integer decoding eliminating interpolation distortion errors that degrade sonic purity. Native sample-rate upsampling is available for all inputs, up to 384kHz for non-DSD (PCM) music files.Selectable digital filters are available for customization. An asynchronous USB input, along with four galvanically isolated SPDIF inputs, assures all of your digital sources will integrate with the DAC9. We pioneered using quad D-A converters, with each channel using dual stereo DACs running in mono to increase dynamic range and lower the noise floor. The digital side mates to a vacuum-tube analog section that uses a pair of 6H30 dual triode tubes. The DAC9 is a balanced design with a Class-A, zero feedback analog section with no capacitive coupling.Like other products that have preceded it, the DAC9 combines remarkable resolution with relaxed musicality. Audio Research’s sonic legacy—clarity, dynamics, dimensionality, and musical authority—are obvious and thoroughly engaging. After more than 50 years, our focus remains the advancement of the state-of-the-art in music reproduction. Every component is meticulously hand-crafted and personally auditioned befor it leaves our Minnesota facility.Our attention to detail, customer service, and product support create unprecedented value. An Audio Research component is more than a purchase, it is an investment. TECHNICAL SPECIFICATIONSFrequency Response +/-0.15dB 20Hz – 20kHz; +/-3.0dB 6Hz – 192kHz THD+Noise Less than .002% at 2V RMS 1kHz Balanced output Signal to Noise Ratio >114dB Intermodulation & Noise .001% (SMPTE ratio) Channel Separation 107dB Intrinsic Jitter <10pS DAC Resolution 24 bits Push Buttons Power, Menu, Option, Enter, Input, Mute Output Impedance 500 Ohms balanced, 250 Ohms SE Digital Filter Selectable Fast or Slow algorithms Upsampling All Inputs upsample to 384kHz Inputs USB2.0HS 44.1 to 384kHz, DSD, 2xDSD; RCA, BNC, XLR 44.1 to 192kHz; TOS 44.1 to 96kHz Rated Outputs 3.8V RMS Max Balanced; 1.9V max SE (@ 0dB input) Power Supplies Electronically-regulated low and high voltage supplies. Line regulation better than .01% Noise 103dB Tube Complement (2) 6H30 dual triodes Power Requirements 100-125VAC 60Hz (200 – 250VAC 50/60Hz) 60 watts maximum Standby Less than 2 watt Dimensions Width: 19? (48 cm)Height: 7? (17.8 cm)Depth: 15.5? (39.4 cm)Handles extend 1.50? (3.8 cm) forward of the front panel.Weight: 32.0 lbs. (14.6 kg) Net; 43.2 lbs. (19.8 kg) Shipping.

Audio Research Classic 60 Power Amplifier

End: 26.12. 2024 09:10:31 on Thursday
  • Condition: Used
  • Price: 1467.4 EUR Auktion
  • Status: unsold
  • Item number: 135451667286
  • Bids: 0
  • Seller: us.amek (1153|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research Classic 60 Power Amplifier

End: 19.12. 2024 05:37:48 on Thursday
  • Condition: Used
  • Price: 1456.26 EUR Auktion
  • Status: unsold
  • Item number: 135436865677
  • Bids: 0
  • Seller: us.amek (1151|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research Classic 60 Power Amplifier

End: 20.11. 2024 06:04:49 on Wednesday
  • Condition: Used
  • Price: 1442.56 EUR Auktion
  • Status: unsold
  • Item number: 135372221472
  • Bids: 0
  • Seller: us.amek (1146|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research Classic Ad, Dual 75, 76 Tube Amp, Article, 1973

End: 18.11. 2024 17:28:38 on Monday
  • Condition: Used
  • Price: 7.55 EUR FESTPREIS
  • Status: unsold
  • Item number: 145350264044
  • Seller: effgjm (22626|99.1%)
  • Seller information: Commercial (with base shop)
  • Item location: Olmsted Falls, Ohio USA
  • Ships to: Worldwide
  • Shipping: 3,0 EUR
  • on EBAY
  • Description

    This is a reprint of a Vintage Advertisement from 1973! Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

Audio Research Classic 60 Power Amplifier

End: 13.11. 2024 03:15:15 on Wednesday
  • Condition: Used
  • Price: 1464.94 EUR Auktion
  • Status: unsold
  • Item number: 135347886718
  • Bids: 0
  • Seller: us.amek (1143|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research Classic 60 Power Amplifier

End: 06.11. 2024 03:15:00 on Wednesday
  • Condition: Used
  • Price: 1442.28 EUR Auktion
  • Status: unsold
  • Item number: 135330221959
  • Bids: 0
  • Seller: us.amek (1143|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research Classic 60 Power Amplifier

End: 30.10. 2024 02:14:44 on Wednesday
  • Condition: Used
  • Price: 1418.74 EUR Auktion
  • Status: unsold
  • Item number: 135315508307
  • Bids: 0
  • Seller: us.amek (1139|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Audio Research SP20 pure Class A Tube Preamplifier - w/headphone amp & new tubes

End: 28.10. 2024 20:25:04 on Monday
  • Condition: Used
  • Price: 3739.82 EUR FESTPREIS
  • Status: unsold
  • Item number: 167047830678
  • Seller: lovesmesomevinyl (1318|100.0%)
  • Seller information: non commercial
  • Item location: Acworth, Georgia USA
  • Ships to: US
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    For sale is my Audio Research SP20 tube preamplifier (note: I also have this amp listed on Audiogon where I typically can offer a better price). Originally sold brand new for $9000. Im selling to downgrade to a more compact (less separates) setup. I purchased this particular unit from The Music Room (tmraudio.com) in early 2022 (Feb 12th to be exact). I have used it in my primary 2 channel setup ever since. This preamp operates flawlessly and Ive never had a single issue with it since day 1. I installed brand new tubes purchased from The Tube Depot back in November 2023, but these newly installed tubes currently have ~ 179 hrs of use (see pics). Comes with original remote and manual. Ill ship in the same box I received it in (see pics) using original packing materials. Weight is around 30 pounds. Shipping will be a flat $70 via either UPS or FedEx. BTW, there is a really good review of this preamp on Stereophile which provides far more details than I could list here. Simply google Stereophile Audio Research SP20 review, but the writer mentions in his summary: With the neutral, detailed, dynamic, and flexible SP20, Audio Research has hit one out of the park. The company has provided in the SP20 a level of performance of both phono and line stage that would cost almost twice as much to match with ARC separates, when the cost of interconnects is included. ARC has included in the SP20 features derived from their flagship Reference 10 line stage, as well as a first-rate headphone amplifier. I never thought Id call a $9000 preamp a bargain, but the SP20 is just that. That original Stereophile review is what originally sold me on purchasing this particular preamp.

Audio Research Classic 60 Power Amplifier

End: 23.10. 2024 02:13:19 on Wednesday
  • Condition: Used
  • Price: 1405.66 EUR Auktion
  • Status: unsold
  • Item number: 135303976974
  • Bids: 0
  • Seller: us.amek (1137|100.0%)
  • Seller information: non commercial
  • Item location: San Francisco, California USA
  • Ships to: US
  • Shipping: EUR
  • on EBAY
  • Description

    The Classic 60 Hybrid Stereo Power Amplifier resembles the long-popular D115 in Audio Researchs family of High Definition® power amplifiers. But its lineage is strictly Classic 150. Which means nothing less than state-of-the-art in design, construction, musicality, and operational convenience...at an affordable price. Like the Classic 150, the Classic 60 proceeds from the notion that power ratings dont always describe a power amplifiers real capabilities. Far more important are such qualities as dynamic stability. lucidity, subtlety. And to achieve those, Audio Research has used its traditional partial cathode coupling along with triode operation of the Classic 60s eight 6550 power output tubes. Additional circuit improvements, as well as the usual rigorous parts selection and manufacturing Audio Research, are noted for, also contributing sonically. Translated into the language of listening, this signifies stunning bandwidth, a noise floor virtually beneath audibility, and musically fulfilling SPLs at dramatically lower gain settings. Dynamics, timbres of individual instruments, soundstage, and musical emotion all surge out from a black velvet of silence. Simply put the Classic 60 resolves far more of a musical program than amplifiers rated at two, three, or four times its seemingly modest 60 WPC. But the Classic 60 is easily up to the task of driving all but the most demanding loudspeakers, even in spacious listening rooms. And while it shows modest preamplifiers in their best light, it also shines when coupled with premiere designs, such as Audio Researchs SP14 or SP15. Convenience figures are high on the Classic 60s list of attributes, as well. For example, the DC balance of the output tubes is maintained automatically, while tube biasing continuously adjusts to changes in incoming line voltage. Performance stays razor-sharp without bothersome tweaking or adjustments. And quiet fan cooling, along with triode operation, means significantly longer tube life. A Classic 60 owner can look forward to years of low-maintenance performance POWER OUTPUT60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. The approximate actual power available at clipping: 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and condition ie: if the power line has high distortion, maximum power will be affected adversely, although, from a listening standpoint, this is not very critical.)POWER BANDWIDTH(-3dB points): 12Hz to 40kHzFREQUENCY RESPONSE-INPUT SENSITIVITY.55V RMS for rated outputINPUT IMPEDANCE100K ohms, nominalOUTPUT TAPS-OUTPUT REGULATIONApproximately 0.3dB 16-ohm load to open circuitOVERALL NEGATIVE FEEDBACK20dBDAMPING FACTORApproximately 30DISTORTION-SLEW RATE20V/µsRISE TIME2.0 µsHUM & NOISELess than 2.0mV RMS - 84dB below-rated output (20kHz bandwidth unweighted, inputs shorted)POWER SUPPLY ENERGY STORAGEApproximately 280 joulesPOWER REQUIREMENTS105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at idleTUBE COMPLEMENT(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 driversDIMENSIONS19 (48 cm) W (standard rack panel) x 7 (18 cm) H x 15 ¾ (40 cm) D (front panel back). Handles extend 1 ? (4.1 cm) forward of the front panel. Output connectors extend 1 behind the rear panel.WEIGHT63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping

Verstärker Acoustic Research A-03 Hifi audiophil Phono Sektion Design Klassiker

End: 21.10. 2024 19:43:21 on Monday
  • Condition: Used
  • Price: 150.0 EUR FESTPREIS
  • Status: unsold
  • Item number: 167014416550
  • Seller: rabatz62 (1434|100.0%)
  • Seller information: non commercial
  • Item location: Reinstorf Deutschland
  • Ships to: Worldwide
  • Shipping: 10,5 EUR
  • on EBAY
  • Description

    Verstärker Acoustic Research A-03 Hifi audiophil Phono Sektion Design KlassikerDaily shipping by DHL registered Airmail worldwideShipping by DHL registered Airmail worldwide, please ask for Shipping Costs DiscriptionOriginal Acoustic Research A-03 Versand möglich weltweit per DHL auf Anfrage Preisvorschläge erwünscht! Mehr feines Hifi wird man in dieser Preislage kaum finden. Schöner audiophiler Vollverstärker von Acoustic Research aus den 1990er Jahren. Schlichtes und hochwertiges Design. Guter fein klingender Phono Eingang zudem ein CD Direkt Schalter. Erste Hand aus Nachlass, daher wwird er verkauft. Wenige Gebrauchsspuren und nur etwas eingestaubt. Lief bis zuletzt, klingt schön und gut klingend. Kein Kellerkind und keine Bastelstube. Abholung und Probe hören möglich. Versand sicher mit mit DHL, gut verpackt ShippingI only ship by registered air mail and I carge only fair shipping costs, so please dont punish me for actual charges! I am happy to ship by DHL worldwide. I gladly combine purchases I ship the same day or day after payment depending on the time of day payment is received. I take pride in packing and shipping carefully .In the end..... I wish you a lot of fun with this articel! Thank you for looking!

Audio-GD HE-1 MK2 Class A Preamp & Shunyata Research Zitron Cobra Power Cable

End: 17.10. 2024 22:13:59 on Thursday
  • Condition: Used
  • Price: 1837.44 EUR FESTPREIS
  • Status: sold
  • Item number: 235583065714
  • Seller: zabargad11 (625|100.0%)
  • Seller information: non commercial
  • Item location: Sarver, Pennsylvania USA
  • Ships to: US
  • Shipping: 0,0 EUR
  • on EBAY
  • Description

    Up for sale is my beautiful state of art high-end real balanced ACSS Class A preamplifier the one and only audio-gd he1 mk2 in mint condition.This preamp is less than 2 years old and works %100 flawlessly with no issues and looks like new.I am including the very expensive ($2500) Shunyata Research Zitron Cobra 2m power cable at my asking price. This power cable works well with this unit.Also, included at my asking price the plexiglass transparent top plate as you can see from my pictures.This unit was kept in a smoke free, humid free and children free environment and comes with all the original accessories including the remote control and original box/packaging.The shipping is free at my asking price.I have also listed this unit on usaudiomart with a LOWER PRICE & NO TAX!Please let me know if you have any questions or concerns.Thanks for looking…CW.