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Audio 1/98 Audio Research Reference 1, Spectral SDR 3000, Jadis JD 1, mbl 9010 C
End: 03.01. 2025 10:11:58 on Friday
Audio Research SDA1 4 / 2 Channel Amplifier
End: 05.11. 2024 16:45:38 on Tuesday
- Condition: Used
- Price: 1715.21 EUR

- Status: unsold
- Item number: 226405496657
- Seller: audioclassicsltd (3388|99.0%)
- Seller information: Commercial (with base shop)
- Item location: Vestal, New York
- Ships to: US
- Shipping: 90,0 EUR
- on EBAY
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Description
Audio Research SDA1 4 / 2 Channel Amplifier Audio Classics, Ltd. Original MSRP: $3995.00 Nice multi-channel amplifier from Audio Research. 4 x 100 watts (8-Ohms), 4 x 150 watts (4-Ohms) or 300 wpc when bridged to stereo. Fully tested and operating to original specs. Some lite nicks and scratches. Looks good. Heavy, Beefy build quality. Thanks for looking. Model / Serial SDA1 / 79002 Contiguous US Lower-48-State shipping, insurance and handling charges for this item will be $90.00 Signature Required. Please submit all inquiries regarding this item through the Ebay messaging system and ask All questions before committing to purchase. We will only ship to your Ebay/Paypal/Credit-Card Verified or Confirmed shipping address. We will not under-value this item or otherwise falsify our invoices or shipping documents for any reason.This item is available for sale only through Ebay.________________________________________________________________________________________________________
AUDIO RESEARCH SDP-1 AND SDA1
End: 22.09. 2024 22:56:10 on Sunday
- Condition: Used
- Price: 1848.69 EUR

- Status: sold
- Item number: 116327795580
- Seller: maineauctioneer (1417|100.0%)
- Seller information: non commercial
- Item location: Westbrook, Maine
- Ships to: US
- Shipping: EUR
- on EBAY
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Description
THIS SALE IS FOR THE PAIR TOGETHER. INCLUDES BOTH IN ORIGINAL BOXES. SHIPPED IN TWO PIECES. tHE sdp-1 AND THE sda1 4 CHANNEL AMP CAN BE BRIDGED TO 2 CHANNEL. EACH IS IN EXCELLENT WORKING ORDER WITH NO KNOWN ISSUES. THEY SOUND WONDERFUL TOGETHER! SHIPS VIA FEDEX.
Audio 6/88 Sony CDP-557 ESD, Audio Research SP 11 Mk II, Burmester 808 MK III
End: 04.09. 2024 09:16:10 on Wednesday
Audio Research SD 135 High Definition / Service f. 500€
End: 28.08. 2024 11:25:21 on Wednesday
- Condition: Used
- Price: 2475.0 EUR

- Status: unsold
- Item number: 276476522833
- Seller: phonobar_se (1069|100.0%)
- Seller information: Commercial
- Item location: Älghult Schweden
- Ships to: Worldwide
- Shipping: 39,0 EUR
- on EBAY
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Description
Audiophile Transistor Endstufe mit Kontrolle und leicht röhrigem Klangbild. 2x130/240W an 8/4 Ohm. Cinch/RCA & XLR Eingang. Wurde in 2022 vom Vorbesitzer für 500€ überholen lassen. 3 Monate Garantie. Inklusive Manual & Schaltplan/Scematic als Kopie. Inklusive des dicken Netzkabels mit Spezialstecker. Europäisches 220/240Volt Gerät. NP ca. 5.000€. Das sagt Audio Research: The SD135 is an entirely new amplifier for Audio Research involving a new mix of discrete devices within the framework of a pure analog, solid-state design. Like the larger HD220, the new SD135 (SD for Silicon Drive) uses Thermal Trak® self-biasing output devices in a Class A-B design. And like the HD220, it accommodates either single-ended or balanced inputs. But unlike the larger hybrid, the SD135 features an all-solid-state input stage using multiple JFET devices in each channel, directly driving the output stage – no interstage coupling capacitors needed. Because expensive coupling capacitors and high voltage regulated supplies required in tube circuits can be omitted, the SD135 is within reach of many more music-lovers. The SD135 is an amplifier with amazingly fast response time, explosive dynamics and plenty of current delivery for a wide range of speaker types including difficult, low impedance models. Frequency response is an amazing 0.4Hz to 300kHz! Bass is deep, controlled and quick to the punch. The noise floor of the SD135 is extremely low, rendering micro-dynamics and subtle sonic nuances with vivid clarity against a black background. Its presentation is transparent, detailed, and grainless – no listener fatigue here. Pair it with an Audio Research preamp and you will hear an immense soundstage in a highly refined and purely musical presentation. Reassuringly, the SD135 features protection circuitry that is sonically invisible. If there is DC at its inputs, or if its outputs are shorted, the SD135 will go into protect mode, muting the output and protecting your valuable loudspeakers. A low-speed (and quiet) 12V D.C. fan cools each channels internal heat sinks, helping to insure long, trouble-free life. The detachable power cord is a high quality IEC-type rated for 20 amps. The anodized front-panel is available with a natural or a black finish. Front panel handles are included but may be easily removed if the installation demands it. The SD135 provides the Audio Research hallmarks of high definition® and musicality in a compact, affordable package that will simply eclipse the competition. You must audition the SD135 for yourself to hear the latest evolutionary step in solid-state technology. Technik: Specifications POWER OUTPUT: 130 watts per channel into 8 ohms from 20Hz to 20kHz. 230 watts per channel into 4 ohms. POWER BANDWIDTH: (-3dB points) 2Hz to 200kHz. FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.4Hz to 300kHz. INPUT SENSITIVITY: 3.2V RMS BAL for rated output. (20 dB Bal gain into 8 ohms.) INPUT IMPEDANCE: 300K ohms Balanced, 150k ohms SE. OUTPUT POLARITY: Non-inverting. Balanced input pin 2+ (IEC-268). OUTPUT REGULATION: Approximately 0.05dB 8 ohm load to open circuit (Damping factor approximately170). OUTPUT CURRENT: 60 Amps peak (1 millisecond) OVERALL NEGATIVE FEEDBACK: 7dB. SLEW RATE: 50 volts/microsecond. RISE TIME: 1.0 microseconds. HUM & NOISE: Less than 0.05.1mV RMS – 116dB below rated output (IHF weighted, input shorted). POWER SUPPLY CAPACITANCE: 96,000 uF. POWER REQUIREMENTS: 210-250VAC 50Hz) 500 watts at rated output (130 WPC 8 ohms) 600 watts max, 150 watts idle. DIMENSIONS : 19 (48.3 cm) W x 6.25 (15.9 cm) H x 15 (38.1 cm) D. Handles extend 1.5 (3.8 cm) forward. WEIGHT: 42.8 lbs. (19.5 kg) Net; 55.3 lbs. ( 25.2 kg ) Shipping.
Audio Research Corp SD135 Amplifier with UN-Thermaltrak Mod
End: 26.07. 2024 21:15:34 on Friday
- Condition: For parts or not working
- Price: 1588.31 EUR

- Status: unsold
- Item number: 116266458123
- Seller: mr.overkill (3538|98.4%)
- Seller information: non commercial
- Item location: Eden Prairie, Minnesota
- Ships to: US
- Shipping: 44,0 EUR
- on EBAY
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Description
Audio Research SD135 solid state Amplifier. one of the best sounding solid state amps ARC ever made! This amplifier has had an important reliability modification done to it that keeps the sonic character but improves stability and long term reliability. for you tech types, PM me and I will be happy to discuss at length the mod. In Short, Onsemi the manufacturer of the output transistors came out for a short time with a version of a transistor that had an internal temperature sensing device that controls the amps Bias. that temperature sensing device fails and when it does the amp looses control of the bias and the amp fails. I have designed and installed a circuit modification based on what most class A/AB amplifiers use that adds an external temp sensing/bias circuit, but keeps the functional part of the output transistors working, but adds a new temp sensor for bias control. this keeps the sonic character of the amp as it is literally the same parts just with a more conventional bias control method. makes the amplifier far more reliable over the stock design. Power output130 watts per channel into 8 ohms from 20Hz to 20kHz. 230 watts per channel into 4 ohms.Power bandwidth(-3dB points) 2Hz to 200 kHzFrequency response(-3dB points at 1 watt) 0.4Hz to 300 kHzInput sensitivity3.2V RMS BAL for rated output. (20 dB Bal gain into 8 ohms)Input impedance300K ohms Balanced, 150k ohms SEOutput taps-Output regulationApproximately 0.05dB 8 ohm load to open circuitOverall negative feedback7dBDamping factorApproximately 170 The SD135 is an amplifier with amazingly fast response time, explosive dynamics and plenty of current delivery for a wide range of speaker types including difficult, low impedance models. Frequency response is an amazing 0.4Hz to 300kHz! Bass is deep, controlled and quick to the punch. The noise floor of the SD135 is extremely low, rendering micro-dynamics and subtle sonic nuances with vivid clarity against a black background. Its presentation is transparent, detailed, and grainless – no listener fatigue here. Pair it with an Audio Research preamp and you will hear an immense soundstage in a highly refined and purely musical presentation. Reassuringly, the SD135 features protection circuitry that is sonically invisible. If there is DC at its inputs, or if its outputs are shorted, the SD135 will go into protect mode, muting the output and protecting your valuable loudspeakers. A low-speed (and quiet) 12V D.C. fan cools each channels internal heat sinks, helping to insure long, trouble-free life. The detachable power cord is a high quality IEC-type rated for 20 amps. The anodized front-panel is available with a natural or a black finish. Front panel handles are included but may be easily removed if the installation demands it.
Audio Research SDP1 Digital Time Delay
End: 10.06. 2024 12:02:07 on Monday
- Condition: Used
- Price: 903.38 EUR

- Status: sold
- Item number: 126521882490
- Seller: maineauctioneer (1414|100.0%)
- Seller information: non commercial
- Item location: Westbrook, Maine
- Ships to: US
- Shipping: EUR
- on EBAY
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Description
This AR SDP1 is in fantastic working and cosmetic condition. There are no known issues with this piece. Ships fast and well packed via FedEx.
Audio Research D-100 / ClassD Audio CDA-250 / USA
End: 23.05. 2024 05:40:49 on Thursday
Vector-Aligned Phono Cartridge Transducer Research Audio Technical Series v
End: 26.01. 2024 02:06:25 on Friday
- Condition: Used
- Price: 41.78 EUR

- Status: sold
- Item number: 395138444774
- Seller: topperelectronics (1059|95.0%)
- Seller information: Commercial (with base shop)
- Item location: Santa Ana, California
- Ships to: US
- Shipping: 5,4 EUR
- on EBAY
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Description
Unit only
Audio Research integrated amp amplifier DSi-200 & remote +box Local Pickup SD CA
End: 30.07. 2023 12:49:51 on Sunday
- Condition: Used
- Price: 1768.55 EUR

- Status: unsold
- Item number: 175825791126
- Seller: chrispycritter007 (9260|99.7%)
- Seller information: Commercial (with base shop)
- Item location: San Diego, California
- Ships to: None
- Shipping: 0,0 EUR
- on EBAY
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Description
No shipping. Local pickup only in San Diego, California. Amp in excellent working condition. Light cosmetic wear. Note: pickup must be within ten days of payment. Details: Power output: 200 watts per channel into 8? (stereo) Frequency response: 5Hz to 55kHz Total harmonic distortion: 1% Damping factor: 167 Input sensitivity: 930mV (line) Signal to noise ratio: 94dB (line) *************Thanks for looking!
Synergistic Research HFT - 6 Gray 4 Black - Audiophile High Frequency Transducer
End: 03.06. 2023 13:04:37 on Saturday
- Condition: Used
- Price: 465.25 EUR

- Status: unsold
- Item number: 334888889541
- Bids: 0
- Seller: highendaudioauctions (15172|100.0%)
- Seller information: Commercial (with base shop)
- Item location: Brooklyn, New York
- Ships to: Worldwide
- Shipping: 43,6 EUR
- on EBAY
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Description
Follow us| Sign up for our newsletter Synergistic Research HFT - 6 Gray 4 Black - Audiophile High Frequency Transducer For over 22 years HEAA has been selling the finest HiFi online, but did you know that we BUY your HiFi equipment as well? Contact our sister company STEREOBUYERS for a fair quote today!FREE SHIPPING in USA! Local Pickup in NYC Available All of the pre-owned items that we sell are thoroughly inspected and tested both on our test bench and in our listening room. Your satisfaction is guaranteed. Synergistic Research High Frequency Transducers Cosmetic Condition:9/10: Excellent - light use, no visible imperfections Cosmetic Notes:Like new condition. Please see all high resolution photographs below. Functional Notes:Functions as intended - 6 Gray - 4 BlackOriginal Box:NoManual:NoShipping Method:FedEx Ground (Domestic) / FedEx Economy, Ebay Standard Delivery (International)Shipping Weight (lbs):1 (8x6x2) High-End Audio Auctions has been THE trusted source for high-end, classic and vintage audio components on eBay since 2000! Our unique products, unparalleled service and bombproof packaging keeps our customers coming back again and again. We are experts at selling and shipping worldwide, with items ranging from $5 to $50,000. We look forward to earning your repeat business! By placing a bid on any of our listings, you agree to our terms & conditions Click here to learn more Home| About Us| Store Policies| FAQs| Feedback| Contact Us| Custom Tuned Cables _gsrx_vers_1436 (GS 9.0.5 (1436))
Audio Research D240 Amplificador de Potencia Adaptador desde 1992
End: 12.04. 2021 19:24:57 on Monday
- Condition: Used
- Price: 5.93 EUR

- Status: unsold
- Item number: 143240634535
- Counter: 275
- Seller: effgjm (20034|99.8%)
- Seller information: Commercial (with base shop)
- Item location: Olmsted Falls, Ohio
- Ships to: Worldwide
- Shipping: 5,38 EUR
- on EBAY
AUDIO RESEARCH MODEL SDA1 FOUR CHANNEL AMPLIFIER BLACK FACE EXCELLENT CONDITION
End: 18.11. 2019 08:00:28 on Monday
- Condition: New: Other
- Price: 579.37 EUR

- Status: sold
- Item number: 274090984010
- Counter: 886
- Bids: 28
- Seller: gearsanmore (847|100.0%)
- Seller information: non commercial
- Item location: Valparaiso, Indiana
- Ships to: Worldwide
- Shipping: 175,98 EUR
- on EBAY
Audio Research Sdp 1 spacial processor
End: 06.10. 2019 03:29:17 on Sunday
- Condition: Used
- Price: 828.82 EUR

- Status: sold
- Item number: 174049260774
- Counter: 244
- Bids: 6
- Seller: joepye812 (446|100.0%)
- Seller information: non commercial
- Item location: Evansville, Indiana
- Ships to: US
- Shipping: 54,89 EUR
- on EBAY
MARANTZ SD72 Hi End AUDIO CASSETTE DECK PIASTRA - 3 heads - SD 72 - RESEARCH
End: 01.06. 2019 18:02:44 on Saturday
- Condition: Used
- Price: 190.0 EUR

- Status: sold
- Item number: 123769339392
- Counter: 84
- Seller: angolo63 (129|100.0%)
- Seller information: non commercial
- Item location: Roma
- Ships to: Worldwide
- Shipping: 0,0 EUR
- on EBAY
Audio 1/98 Audio Research Reference 1, Spectral SDR 3000, Jadis JD 1, mbl 9010 C
End: 11.09. 2018 18:40:41 on Tuesday
- Condition: Used
- Price: 5.0 EUR

- Status: sold
- Item number: 283148480199
- Counter: 32
- Seller: pftpft200 (652|100.0%)
- Seller information: non commercial
- Item location: Heidelberg
- Ships to: Worldwide
- Shipping: 5,0 EUR
- on EBAY
Audio Research SD135 Stereo Power Amp, Manual, Box - Complete & Near Mint
End: 24.02. 2017 07:45:08 on Friday
- Condition: Used
- Price: 1858.41 EUR

- Status: sold
- Item number: 152439979066
- Counter: 226
- Seller: 2010numers (784|99.3%)
- Seller information: Commercial (with base shop)
- Item location: Oakland, California
- Ships to: Worldwide
- Shipping: EUR
- on EBAY
Audio Research SD135 stereo hi-fi power amplifier
End: 27.02. 2016 21:57:30 on Saturday
- Condition: Used
- Price: 1650.0 EUR

- Status: sold
- Item number: 252290778673
- Counter: 831
- Bids: 41
- Seller: macarr1 (1230|100.0%)
- Seller information: non commercial
- Item location: Messina
- Ships to: Worldwide
- Shipping: 50,0 EUR
- on EBAY
AUDIO 6/88 AUDIO RESEARCH SP 11 MKII,SONY CDP 557 ESD,YAMAHA CDX 10000,LEVINSON
End: 21.02. 2016 22:39:51 on Sunday
- Condition: Used
- Price: 4.72 EUR

- Status: sold
- Item number: 111902296614
- Counter: 48
- Bids: 6
- Seller: 2011suiram (415|100.0%)
- Seller information: non commercial
- Item location: Kiel
- Ships to: Worldwide
- Shipping: 2,5 EUR
- on EBAY
Audio Silence Detector for your audio link: Videoquip Research SD - 2 PHASE 3
End: 06.01. 2016 20:35:12 on Wednesday
- Condition: Used
- Price: 103.56 EUR

- Status: sold
- Item number: 262219359992
- Counter: 11
- Seller: broadcastshopmark (372|100.0%)
- Seller information: non commercial
- Item location: Stockton-on-Tees, Cleveland
- Ships to: GB
- Shipping: 6,5 EUR
- on EBAY
Audio Research SDP1 Spacial Definition Processor
End: 05.01. 2016 20:45:19 on Tuesday
- Condition: Used
- Price: 200.0 EUR

- Status: sold
- Item number: 161929228835
- Counter: 54
- Bids: 1
- Seller: sorexpansion (4|0.0%)
- Seller information: non commercial
- Item location: Alzabares Alto
- Ships to: EuropeanUnion
- Shipping: 35,0 EUR
- on EBAY
Audio Silence Detector for your audio link: Videoquip Research SD - 2 PHASE 3
End: 13.09. 2015 07:03:09 on Sunday
- Condition: Used
- Price: 107.84 EUR

- Status: sold
- Item number: 262004535323
- Counter: 67
- Seller: broadcastshopmark (358|100.0%)
- Seller information: Commercial (with base shop)
- Item location: Stockton-on-Tees, Cleveland
- Ships to: GB
- Shipping: 6,5 EUR
- on EBAY
Audio Research SDA1 Four Channel Amplifier / Audiophile / Rare
End: 21.06. 2015 20:19:49 on Sunday
- Condition: Used
- Price: 835.02 EUR

- Status: sold
- Item number: 231590551444
- Counter: 627
- Bids: 28
- Seller: highendaudioauctions (3688|99.7%)
- Seller information: Commercial (with base shop)
- Item location: Brooklyn, New York
- Ships to: Worldwide
- Shipping: EUR
- on EBAY
Audio Research Amplifier SD135 Mint Condition! One Best of ARC before ClassD! $1
End: 27.02. 2015 01:27:09 on Friday
- Condition: Used
- Price: 2047.11 EUR

- Status: sold
- Item number: 221692291649
- Counter: 1126
- Bids: 35
- Seller: skyeocean (250|100.0%)
- Seller information: non commercial
- Item location: Granada Hills, California
- Ships to: US
- Shipping: EUR
- on EBAY
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