MSRP: $25,000 for the pair Used, mint condition Uses IEC C19 power cables (Included) Including extra set of tubes. Ships in original box. Will ship individually (two separate packages) @ 90 lbs each, totaling 180 lbs. Since any listing 150 lbs and above is required by eBay to be classified as freight, and these will not be shipped freight, the initial shipping price is not accurate. Please DO NOT PAY without receiving an accurate quote from us. Manual: https://audioresearch.com/wp-content/uploads/2021/08/REF250_Manual.pdf Specifications: POWER OUTPUT: 250 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 250 watts, below .04% at 1 watt. Approximate actual power available at “clipping” 270 watts (1kHz). (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if 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) 5Hz to 70kHz. FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.5Hz to 110 kHz. INPUT SENSITIVITY: 2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms.) INPUT IMPEDANCE: 200K ohms Balanced. OUTPUT TAPS: 4, 8, 16 ohms. OUTPUT REGULATION: Approximately 0.9dB 16 ohm load to open circuit (Damping factor approximately 10). OVERALL NEGATIVE FEEDBACK: 8.8dB. SLEW RATE: 20 volts/microsecond. RISE TIME: 1.5 microseconds. HUM & NOISE: Less than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output). POWER SUPPLY ENERGY STORAGE: Approximately 900 joules. POWER REQUIREMENTS: 105-130VAC 60Hz (260- 250VAC 50Hz) 770 watts at rated output, 1000 watts maximum, 380 watts at “idle,” 1 watt off. TUBES REQUIRED: 3 Matched pair KT120 (Power output V1-6); 1 Matched pair KT120 (Driver V8- 9); 2 6H30 (Gain stage V7 and Regulator Driver V10); 1 6550C (Regulator V11). DIMENSIONS: 19 (48.3 cm) W x 8.75 (22.2 cm) H x 19.5 (49.5 cm) D. Handles extend 1.5 (3.8 cm) forward Important Note on Shipping: eBay estimates of shipping costs are not accurate and do not include insurance or adult signature requirement. Please contact us for a more accurate quote. No shipping to Vietnam, China or Hong Kong. Please do not submit payment until you have received an invoice from us with accurate shipping costs. We reserve the right to hold the item or cancel the transaction if actual shipping costs are not paid.

The Audio Research LS17 Tube Preamplifier is a high-quality audiophile preamp designed by Audio Research. This tube amplifier features two channels and comes in a sleek black color. Known as the Baby Ref, this preamplifier is ideal for enhancing the audio quality of your home audio system. With its tube technology and Audio Research's reputation for producing high-end audio equipment, the LS17 is sure to provide a superior listening experience for audiophiles. The preamp is in excellent physical and operational condition. The case and face are near mint. The top has a couple of linear marks that can’t be captured in the photos. They aren’t scratches, more like scuffs that can only be seen at certain angles with the light. It works perfectly. I don’t know how many hours are on the tubes. I purchased locally approximately 6 months ago while my SP16 was awaiting repair. I love the sound, but I do want to return to a built in phono input. This preamp is line stage only. Balanced inputs and outputs are nice to have as well for those that can use them. I do not have remote, manual, or original box. I will include a power cable. I will pack carefully and ship quickly. I think you’ll be very happy - it’s a beautiful preamp with great sound. Check all the rave reviews online.

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

The worlds largest online retailer of pre-owned audio Product DescriptionWho we areWhat we doOur ProcessOur Policies Audio Research Reference 75 Stereo Tube Power Amplifier Product SKU: 70258 Input Voltage: 120V # of Owners: 1 Service History: None Serial Number: 42406609 Age: Unknown Tobacco Exposure: No MSRP: $8995 Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including some minor scuffs and discoloration spots around the VU meters, power button, faceplate handles, and faceplate top edge. There are a few light scratches on the top surface as well. These blemishes are not readily visible, and do not detract from the overall wonderful appearance. What is Included: Amplifier, Four TungSol KT120 tubes, Two 6H30n-EB tubes, Manual, Power Cable, Factory Packaging Other Notes: The Reference 75 is a stunning amplifier in every way – performance, styling and reliability combined to elevate your music listening to a new experience. Capable of controlling a wide variety of speakers, the Reference 75 will transport you into the musical performance unlike any other comparable amplifier. - Audio Research Functional Notes: Operational condition of this item is excellent, fully tested and no issues found. Shipping: Cost to ship this item within the contiguous United States is a flat rate of $99- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $750 will require a signature upon delivery. Your online source for the best value in new and used audio gear. Visit us online to Buy / Sell / Trade / Consign The Music Room is the largest online retailer of pre-owned HiFi equipment in the world. Headquartered in beautiful Boulder Colorado, The Music Room is a team of 17 strong (and growing) music lovers - all dedicated to one singular mission: delivering the very best online shopping experience in the audio industry - period. We specialize in well-cared for, previously used gear because that is what we are passionate about. We feel that there is nothing more fulfilling than creating a high-performance system on a budget with carefully selected used components, speakers and cables. Our program is safe, secure, fast, fair, hassle-free and highly effective. Visit us online to Buy / Sell / Trade / Consign Buy: Are you looking to get a fair price for your used home audio equipment without all the hassles, headaches, risks and fees? We will appraise your equipment and make you a quick, easy, fair cash offer. Just fill out our “get a quote” form on our homepage to start the process. Sell: We sell in multiple online venues with many (but not all) of our products available in our eBay store. Everything is quality-assured and backed by our best-in-class, satisfaction-guaranteed return policy. Trade: Make your budget go further with a generous trade-in allowance. Let us know what you have available, and we’ll get you the best possible trade-in allowance. We can even assist with shipping & logistics from anywhere in the USA. Just fill out our “get a quote” form on our homepage to start the process. Consign: We offer a hassle-free way for individuals and businesses to liquidate used gear. We’ll handle every step of the process from shipping to appraisals, customer service, fulfillment, and returns: Industry-low rates with no hidden fees Leverage our world-class reputation and get exposure in multiple sales venues - putting your product in front of over 570k monthly shoppers. Our program is Safe, Secure, Fast, Fair, Hassle-Free and Highly Effective. With 100% feedback ratings in every venue in which we sell, you can rest assured that we’ve got your back. Visit us online to Buy / Sell / Trade / Consign Quality Assurance: We offer 15-20 new product listings for sale daily. Each product undergoes an extremely rigorous quality-assurance and listening session by one of our qualified technicians. We understand that buying used audio equipment can be rife with uncertainty and unexpected headaches. Our quality assurance program is informed by a knowledge-base built through delivering over 30,000 used audio products to satisfied customers. We promise to deliver your product in good working order - exactly as described 100% of the time. Support: We don’t just make promises. We stand behind them - your satisfaction is guaranteed. Our support team is ready to help you with any questions you might have before and after the sale. Value: In the never-ending pursuit of high performance, it’s important to stretch your limited budget as far as possible. Used equipment sells for a fraction of new prices, and with a partner like The Music Room you can upgrade any time you like and get most of your money back. There’s simply no better way to maximize a limited audio budget. Packaging: We’ve invested thousands of dollars and countless hours into mastering our state-of-the-art packaging process. Our custom foam-in-place packaging system allows us to safely package almost any item regardless of irregular shapes or sizes. Most importantly, this system provides our customers with a re-usable shipping box which increases the resale value of the product and provides a shipping method for easy, secure returns. Be seen by over 70,000 monthly visitors. Visit us online to Buy / Sell / Trade / Consign Payment: Prompt payment is expected. Paypal is preferred but all forms of payment are accepted. Unpaid item case will be opened after 3 days if no payment received. Shipping Times: Most Domestic orders ship within 1 business day of purchase. For International orders or freight shipments, please allow 2-3 business days. In all cases, tracking information will be emailed to you at the moment the shipping label is created. If you cant find it or have other questions about shipping & logistics, please contact us. Shipping Costs: Flat rate shipping costs are applicable within the contiguous 48 States (USA). These rates are clearly posted on each product page. For an International or custom quote (including Hawaii, PR, AK) please contact us. Returns: Every purchase made on eBay carries a 30-day, satisfaction-guaranteed return policy. If youre not happy with your purchase for any reason or if youve simply changed your mind... no problem. Simply ship it back for a full refund or exchange (minus S&H costs). If you have received an item that is defective in some way, we will make it right. Let us know - we will pay for return shipping and repair the item or refund 100% of your original purchase price.

Audio Research Ref 160M MkI Mono Power Amplifier - PAIR Color: Silver These amplifiers are in excellent condition and function flawlessly. They are consecutive serial number amplifiers and they include their original packaging, user manual, tubes (1278 hours), 20a power cords, bias adjustment tool, and cover removal tool. These amplifiers are available with freight shipping available or for local pickup in Columbus, OH. Feel free to message me your shipping zip code for a freight quote. Do not miss the chance to own these amazing amplifiers at an incredible price.After two years in development, the new Reference 160M (REF160M) Monoblock Power Amplifier is built like no other, looks like no other, and sounds like no other amplifier that you have ever heard, but it is unmistakably Audio Research. It features a refined audio topology with fewer and better components in the signal-path than in previous designs, switchable Ultralinear/Triode operation, proprietary auto-bias, output tube monitoring and protection, an advanced power meter, and much more. This array of features has never been offered before in an Audio Research amplifier. The designers at Audio Research wanted to create a new style that would complement the look of the REF6 preamp while also featuring a transparent faceplate that allows a view of the glowing KT150 vacuum tubes. While this window allows you to see the output tubes, it also incorporates an innovative dual-layer construction with distinctively etched markings that create an integrated power meter. The power meter’s output-level markings illuminate via hidden LEDs, and the illumination brightness is adjustable. The REF160M includes a sculpted cover with an integrated fan to cool the heat generated by the four (4) KT150 output tubes and two (2) 6H30 driver tubes. Solid-state power regulation was chosen to provide increased efficiency, stability, and reliability. The power supply stage uses a newly developed High Energy Capacity Transformer and a hefty bulk storage-capacity network to provide extremely high current on demand for transient peaks and intense dynamics, as well as for prodigious bass depth and authority. It is understood that the best path is the shortest path. Audio Research engineers created a new audio circuit topology with the shortest signal path and the fewest components. Those components are not only the best available, many are custom made for Audio Research. Incorporating these quality components is a special 4-layer circuit board that lowers the noise floor to unprecedented levels, and a design which was previously reserved for use in our preamplifiers. The result is a new benchmark in musicality in every criterion of sound quality.The REF160M also features a proprietary auto-bias circuit that works with various tubes types, including 6550, KT88, and KT120, in addition to the supplied KT150 and works constantly to maintain precise bias of the output tubes, while also adjusting for tube wear. There is no need to check or adjust bias ever again.The new REF160M breaks new ground sonically, aesthetically and operationally, and will be available in Natural (Silver) or Black finishes.POWER OUTPUT140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)POWER BANDWIDTH(-3dB points) 5Hz to 70kHzFREQUENCY RESPONSE(-3dB points at 1 watt) 0.5Hz to 110 kHzINPUT SENSITIVITY2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms)INPUT IMPEDANCE300K ohms Balanced, 100K ohms Single EndedOUTPUT TAPS16 ohms, 8 ohms, 4 ohmsOUTPUT REGULATIONApproximately 0.6dB 16 ohm load to open circuitOVERALL NEGATIVE FEEDBACK14dBDAMPING FACTORApproximately 14DISTORTION-SLEW RATE13 volts/microsecondRISE TIME2.0 microsecondsHUM & NOISE-POWER SUPPLY ENERGY STORAGE-POWER REQUIREMENTS105-130VAC 60Hz (210-250VAC 50Hz) 400 watts at rated output, 700 watts maximum, 260 watts at “idle”, 1 watt of.TUBE COMPLEMENT(2 matched pair) KT150 power output, (2) 6H30 gain stageOTHEROutput polarity: Non-inverting. Balanced input pin 2+ (IEC-268).DIMENSIONSWidth 17 ¼ (43.8 cm). Height 10 (25.4 cm). Depth 18½ (47 cm). Handles extended 19 ¼ (48.9 cm).WEIGHT56 lbs. (25.5 kg) Net; 73 lbs. (33.2 kg) Shipping.Check out my other listings.Feel free to ask any questions.NOTE: These amplifiers are being offered with freight shipping available or for local pickup in Columbus, OH. They are being offered as is with no returns.

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Super nice Audio Research Reference Phono High Definition Vacuum Tube Preamplifier. Specs from the literature: Frequency Response: ± .15dB of RIAA, 10Hz to 60kHz; 3dB points below 1.0Hz and above 250kHz Distortion: .005% at 0.5V RMS 1kHz output Noise & Hum: 0.56µV equivalent input noise, IHF weighted, shorted (Low Gain) input (65 dB below 1mV 1kHz input). 0.055µV equivalent input noise (High Gain) (65dB below 0.1mV 1kHz input) Gain: Selectable 48dB (Low), 69dB (High) at 1kHz (MC & MM compatible) Input Impedance: 47K ohms and 180pF Unbalanced (Low Gain), 280 ohms Unbalanced (High Gain). (Provisions for any value below 47K ohms or added input capacitance for matching certain magnetic cartridges.) Output Impedance: 200 ohms Unbalanced. Recommended load 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum.) Output Polarity: - Maximum Inputs: 100mV RMS at 1kHz (240 mV RMS at 10kHz) Rated Outputs: 0.5V RMS 10Hz to 60kHz, 100K ohm load (output capability is 30V RMS output at 1/2% THD at 1kHz) Power Supplies: Electronically-regulated low and high voltage supplies. Line regulation better than .01% Tube Complement: (11) 6922/E88CC dual triode, plus (1 each) 5AR4, 6L6GC, 6922 in power supply Power Requirements: 100-135VAC 60Hz (200-270VAC 50/60Hz) 120 watts maximum. 50W standby. Line fuse 3A SLO BLO (T2A SLO BLO 230V) Other: Switches: Front (4) Power, Standby, Mono, Mute. Rear (1) Gain Dimensions: 19 (48 cm) W x 7 (17.8 cm) H (standard rack panel) x 15½ (39.4 cm) D. Handles extend 1½ (3.8 cm) forward of front panel Weight: 28 lbs. (12.7 kg) Net; 42 lbs. (19.1 kg) Shipping. Comes as pictured. Shipping insurance and signature. Confirmation will be $75 in the lowers 48 states.

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

Heute 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

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

Audio Januar 1998. Im Heft sind unter anderem folgende Themen, Tests bzw. Gerätebesprechungen zu finden: Magazin: DUAL: Dual stieg wieder in den Hifi-Markt ein - mit Schwierigkeiten. Ein Manager-Trio soll Abhilfe schaffen CD-Spieler Denon DCD-735 gegen Marantz CD-53 MK II Grundig CD 22 gegen Technics SL-PG 580 A Harman/Kardon HD 710 vs. Pioneer PD-S 505 Kenwood DP-5090 gegen Rotel RCD 950 Highend-CD-Player: Spectral SDR 3000 Jadis JD 1 MD-Recorder Onkyo MD-2511 Endverstärker mbl 9010 C Pass Aleph 1.2 Lautsprecher Aerial Modell 8 Arcus DS 77 Avalon Osiris Burmester B 97 Canton Fonum 630 DC Dali 606 Eltax LR 8.5 I.Q. Aspect 5 a Jamo 477 a Magnat Vector 55 MB Quart QL C 400 Mission 750 Phonar P 20 Polk Audio RT 600 Tannoy Mercury M 3 Plattenspieler Clearaudio Reference + Tonarm Souther TQI + System Clearaudio Insider VPI TNT IV mit Tonarm JMW 12-Zoll + Tonabnehmer Audioquest AQ 7000 FE 5 Phono-Vorstufe: FM 222 Receiver + Boxen: T + A K 3 + Boxenset T + A TAS 750 E, T + A TAS 750 E/TAV 500/TAB 600 E/TAW 601 A D/A-Wandler: MBL 1611 Spectral SDR 2000 Professional Test: Cinchkabel-Test von 80 - 750 DM: Wire World Solstice II + Interlink 250 Straight Wire Chorus + Encore II + Sonata XLO/PRO 150 Oehlbach NF-14 Kimber KC 1 Mogami Crystal Clear MIT Terminator T4 Ixos 103 und mehr Vorverstärker Audio Research Reference 1 Burmester 808 Mk 5 Musik: Billy Joel Metallica The Cure Dire Straits Eric Clapton Queen Robert Smith Die Audio-Bestenliste Viele ausführliche CD- bzw. Plattenbesprechungen Anzeigen aus der damaligen Zeit und vieles mehr Zustand: Lager- und Gebrauchsspuren. Das Heft ist schwer, deshalb ist das Porto etwas höher. Falls nicht ausdrücklich erwähnt, sind die Hefte immer ohne CD und sonstige Beilagen. Die Hefte sind auch alle mehr oder weniger gebraucht. Es können evtl. Markierungen bei der Announcen vorhanden sein. Auch ist vereinzelt der Adressaufkleber noch ganz bzw. teilweise vorhanden, es können auch noch Reste am Heft sein. Preisausschrauben wurden in der Regel ausgefüllt bzw. auch ausgeschnitten und sonstige Vorlagen zum Herausschneiden sind in der Regel entfernt. Ab und zu ist auch eine Plattenkritik ausgeschnitten. Abholung möglich oder Versand auf Kosten des Käufers. Abholung bevorzugt Versand erfolgt nach Zahlungseingang. Bezahlung muss innerhalb einer Woche erfolgen oder nach Vereinbarung mit mir. Erfüllunsort ist 69115 Heidelberg. Nach der allgemeinen Regelung des Bürgerlichen Gesetzbuches (BGB) trägt grundsätzlich der Käufer das Risiko des Verlusts und der Beschädigung der Ware auf dem Transportweg (§ 447 Abs.1 BGB). Der Versand der Ware geschieht also auf Risiko des Käufers. Dieses Angebot ist privater, nicht gewerblicher Natur. „Verkauf gebrauchter Ware von Privat“. Keine Haftung für Tippfehler. Bei Abholung 2 Monate Garantie, sonst: keine Garantie. Verkauf abweichend vom geltenden Recht.Mit der Abgabe eines Gebotes verzichten Sie auf die gesetzlichen Garantie- und Gewährleistungsansprüche sowie auf Ihr Rückgaberecht (ausser bei Abholung).

Audio Research Ref 210 Power Amplifier - PAIR MSRP: $21,990 These amps are in great condition and work flawlessly. They come with their packaging, KT 120 tube set, user manuals, remotes, and power cords. They have a total of 1792 hours on the tubes and work great. There are a few minor marks on the amps as shown in the pictures though they are in good condition overall. These amps are available with freight shipping available or for local pickup in Columbus, OH. Please message me with your shipping zip code if you would like a shipping quote. Do not miss out on this rare opportunity! POWER OUTPUT210 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 210 watts, below .02% at 1 watt. Approximate actual power available at “clipping” 240 watts (1kHz). (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if 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) 10Hz to 150kHzFREQUENCY RESPONSE(-3dB points at 1 watt) 0.5Hz to 240 kHz.INPUT SENSITIVITY1.7V RMS Balanced for rated output. (27 dB gain into 8 ohms.)INPUT IMPEDANCE200K ohms BalancedOUTPUT TAPS4, 8 and 16 ohmsOUTPUT REGULATIONApproximately 0.6dB ohm load to open circuitOVERALL NEGATIVE FEEDBACK12dBDAMPING FACTORApproximately 14DISTORTION-SLEW RATE40V/µsRISE TIME1.2 µsHUM & NOISELess than 0.3mV RMS - 106dB below rated output (IHF-A weighted, input shorted, 16 ohm output)POWER SUPPLY ENERGY STORAGEApproximately 787 joulesPOWER REQUIREMENTS105-130VAC 60Hz (260-250VAC 50Hz) 680 watts at rated output, 950 watts maximum, 380 watts at idle, .15 watts off.TUBE COMPLEMENT(3 matched pairs) 6550C power output, (1 matched pair) 6550C driver, 2 - 6N1P gain stage and regulator driver, 1 6550C regulator.DIMENSIONS19 (48.3 cm) W x 8 ¾ (22.2 cm) H x 19½ (49.5 cm) D. Handles extend 1½ (3.8 cm) forward.WEIGHT74 lbs. (33.6 kg) Net; 89 lbs. (40.4 kg) Shipping.Check out my other listings.Feel free to ask any questions.NOTE: These amps are being offered with freight shipping available or for local pickup in Columbus, OH. They are being offered as is with no returns.

Edwards Home Entertainment and Design, an appointed and displaying dealer for McIntosh, Magico, Luxman, Bowers & Wilkins, Focal, NAIM, Parasound, Classe Audio, Rotel and Michi, Rel Acoustics, JL Audio, Perlisten, Soul Note, Gold Note, Marantz, Rose HiFi, AudioQuest SUMMIT Dealer (only Dragon dealer in San Francisco Bay Area), Nordost, as well as part of the Verified Premier Dealer Program on AudioGon, is offering this wonderful Audio Research SP-11/SP-11PS combo. This set is in fine functional and physical condition, with a few superficial surface marks. I will post tubes later this week. Sonically an aesthetically gorgeous. Buy / Sell / Trade / Consign - Edwards Home Entertainment and Design (EHEAD) has been a premier seller of carefully selected, pre-loved high end audio equipment since 1997 and is now an authorized dealer for McIntosh (displaying C2800, C22, C12000, MC462, MC275vi, MC1.25s, MEN220, MT-10, MT-5, MA12000, MA352, MA252, MPC500, MPC1500, MHA200, speakers and interconnect cabling), Magico (displaying the A1, A5, and S3 mk3, S5 mk3), Bowers & Wilkins (displaying 801D4, 802D4, 803D4, 804D4, 805D4, 702S3, 705S3), Luxman (displaying C-10X, M-10X, D-10X, NT-07, L-509Z, and the PD151D), Focal (displaying Scala EVO, Sopra3, Sopra2), NAIM (displaying the SuperNAIT3), Rotel Michi (displaying the P5s2, S5, X3s2), Classe Delta (displaying the Delta Pre2, Delta Stereo, Delta Monos), HiFiROSE (displaying the RS150, RS130, RS250 and RS520), Marantz (displaying Model 10 Integrated, SACD-10 Super Audio SACD/CD Player, Link 10n Streamers, TT-15S2 TurnTable), Rel Acoustics (displaying the Carbon Special, S/812, S/512, T9/x, T7/x. T5/x), Perlisten (displaying the S7t and D212), JL Audio (displaying the G213v2, F113v2, D and E subs), Soul Note (displaying the A2 integrated), Nordost (displaying Norse and Leif series, with demo cases for in home trials), AudioQuest (displaying all power centers, 7000, 5000, 3000, Dragon, Thunderbird, Black Beauty, Pegasus cabling), SolidSteel (displaying HyperSpike stands and amp stands), NEO Luxury Audio Racks (displaying the Quattron), Bossocontinuo (displaying the McRack) Reference. Visit the EHEADAudio com site in South San Francisco, CA for direct phone (begins with 925) / voice / text support. We are always looking to buy quality used gear. Despite listings that may indicate LOCAL PICK UP ONLY - this is just to facilitate posting of gear. Logistics is our specialty, we can facilitate packaging and shipping to and from anywhere in the country. If you are interested in our gear, please reach out and we can figure out a shipping solution that will work. Our shop is in South San Francisco - stop by and put your eyes and ears to work!

MSRP: $25,000 for the pair Used, mint condition Uses IEC C19 power cables (Included) Including extra set of tubes. Ships in original box. Will ship individually (two separate packages) @ 90 lbs each, totaling 180 lbs. Since any listing 150 lbs and above is required by eBay to be classified as freight, and these will not be shipped freight, the initial shipping price is not accurate. Please DO NOT PAY without receiving an accurate quote from us. Manual: https://audioresearch.com/wp-content/uploads/2021/08/REF250_Manual.pdf Specifications: POWER OUTPUT: 250 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 250 watts, below .04% at 1 watt. Approximate actual power available at “clipping” 270 watts (1kHz). (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if 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) 5Hz to 70kHz. FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.5Hz to 110 kHz. INPUT SENSITIVITY: 2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms.) INPUT IMPEDANCE: 200K ohms Balanced. OUTPUT TAPS: 4, 8, 16 ohms. OUTPUT REGULATION: Approximately 0.9dB 16 ohm load to open circuit (Damping factor approximately 10). OVERALL NEGATIVE FEEDBACK: 8.8dB. SLEW RATE: 20 volts/microsecond. RISE TIME: 1.5 microseconds. HUM & NOISE: Less than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output). POWER SUPPLY ENERGY STORAGE: Approximately 900 joules. POWER REQUIREMENTS: 105-130VAC 60Hz (260- 250VAC 50Hz) 770 watts at rated output, 1000 watts maximum, 380 watts at “idle,” 1 watt off. TUBES REQUIRED: 3 Matched pair KT120 (Power output V1-6); 1 Matched pair KT120 (Driver V8- 9); 2 6H30 (Gain stage V7 and Regulator Driver V10); 1 6550C (Regulator V11). DIMENSIONS: 19 (48.3 cm) W x 8.75 (22.2 cm) H x 19.5 (49.5 cm) D. Handles extend 1.5 (3.8 cm) forward Important Note on Shipping: eBay estimates of shipping costs are not accurate and do not include insurance or adult signature requirement. Please contact us for a more accurate quote. No shipping to Vietnam, China or Hong Kong. Please do not submit payment until you have received an invoice from us with accurate shipping costs. We reserve the right to hold the item or cancel the transaction if actual shipping costs are not paid.

Audio Research Ref 6SE Stereo Line Stage Preamplifier MSRP: $22,500Color: SilverThis preamplifier is in excellent condition and functions flawlessly. This is one of the best preamplifiers on the market and it sounds incredible. This preamplifier shows 1217 hours on the unit. It includes the original packaging, remote, user manual, tubes, and power cord. Do not miss the chance to own this amazing preamplifier at an unbeatable price. Electronic SpecificationsFREQUENCY RESPONSE+0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load).DISTORTIONLess than .01% at 2V RMS BAL output.GAINMain output: 12dB Balanced output, 6dB SE output. Record out: 0dB (Processor input: 0dB BALoutput).INPUT IMPEDANCE120K ohms Balanced, 60K ohms SE. Inputs: 4 balanced, 4 single-ended. Assignableprocessor passthrough.OUTPUT IMPEDANCE600 ohms Balanced, 300 ohms SE Main (2). 20K ohms minimum load and 2000pFmaximum capacitance. Outputs (3): 2 main, 1 record out (XLR and RCA connectors).OUTPUT POLARITYNon-inverting.MAXIMUM INPUT18V RMS BAL, 9V RMS SE.RATED OUTPUTS2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capabilityis 70V RMS at less than 0.5% THD at 1kHz).CROSSTALK-88dB or better at 1kHz and 10 kHz.CONTROLSRotary encoders: Volume (103 steps), Select Input. Push Buttons: Power, Menu, Enter, Mono,Invert, Mute.POWER SUPPLIESElectronically regulated low and high voltage supplies. Automatic 45 sec. warm-up/brown-out mute. Line regulation better than .01%.NOISE1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)TUBE COMPLEMENT(6)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.POWER REQUIREMENTS100-135VAC 60Hz (200-250VAC 50/60Hz) 130 watts. Standby: 2 watts.DIMENSIONSWidth: 19” (48 cm)Height: 7.8” (19.8 cm)Depth: 16.5” (41.9 cm)Handles extend 1.6” (4 cm) forward of the front panel.Weight: 37.5 lbs. (17 kg) Net; 49 lbs. (22.3 kg) ShippingCheck out my other listings.Feel free to ask any questions.I ship items only to buyers with signature required on items above $750.NOTE: Returns not accepted.

Tested and working great. Local pickup available in nyc. 240 tube hours

With the REF80S, Audio Research continues their legacy of building some of the best sounding tube amplifiers available today. The new chassis not only adds some great feaures like full auto-bias for long tube life and plug-and-play operation, but looks super cool with the new ghost meters. This just came in on trade from the oringal owner and is in absolutely like new condition. While he has a lot of different amplifiers he never puts a lot of time on any of them. In the time he owned this one its accumulated 458 hours on it. The tubes are just broken in and sounding absolutely amazing. Note: The top cover has a front grill behind the glass meters that can be removed to view the tubes. We usually remove it but it was in place for the pictures. It just looks a lot nicer when removed. AMPLIFIER SPECIFICATIONS -Both XLR balanced and RCA inputs Hour meter 12V trigger Switchable fan speed / defeat Propriatary auto-bias system for both tube power and voltage swing Operates in either Triode or Pentode mode Stereo tubed power amplifier with balanced inputs and 4, 8, and 16 ohm output speaker taps.Tube complement: 4 matched KT150 for power output and 2 6H30s for the gain stage.Maximum output power: 70Wpc continuous, 20Hz–20kHz at 1kHzOutput in Triode mode is 140 wattsInput sensitivity: 1.4V RMS balanced for rated output (25.5dB balanced gain into 8 ohms)Input impedance: 300k ohms balancedOutput polarity: non-invertingHum & noise: 0.2mV RMS, 106dB below rated output (IHF weighted, input shorted)Power requirements: 105–125VAC, 60Hz (210–250VAC, 50Hz), 420W at rated output.Dimensions: 18.5 W by 10.5 H by 18.5 Handles extend 1.5 (38mm) forwardWeight: 62 lbs (30kg) net, 80 lbs shipping. IN THE BOX -Original Box and packingHeavy 20A Power cordOriginal matched tube complimentCover tools and cleaner CONDITION - Super clean and meticulously cared for. No sign of smoke, pets or kids. The face is like the day it was new. Rated Excellent based on the overall sound and cleanliness including very low hour matched tubes. SHIPPING - We ship worldwide with UPS, Fed-Ex and various truck freight lines. All items are packed and padded with care if the original packaging is deemed insufficient. We know how exciting it is to anticipate the arrival of new gear and we want your item to arrive in the same condition it left our facility. Current Retail is $18,500.00

VENDO FRONTALE + 2 MANIGLIE + SET VITI FINITURA SILVER / NATURAL PER AUDIO RESEARCH REFERENCE ONE !!! INTROVABILI !!! NUOVI MAI USATI - FOR SALE FACEPLATE + 2 HANDLES + SCREW SET SILVER / NATURAL FOR AUDIO RESEARCH REFERENCE ONE !!! IMPOSSIBLE TO FIND !!! NEW NEVER USED NOS - NEW OLD STOCK E GRADITO IL RITIRO A MANO, CON PAGAMENTO IN CONTANTINO PROVE QUELLO CHE VEDETE NELLE FOTO E QUELLO CHE ACQUISTATE ESSENDO UNA VENDITA DI OGGETTO USATO DA COLLEZIONE PRIVATA E ESCLUSA QUALSIASI FORMA DI GARANZIA O RESTITUZIONE. FORMULA VISTO E PIACIUTO. LOGGETTO VIAGGIA A RISCHIO E PERICOLO DELLACQUIRENTEIL MIO IMPEGNO E QUELLO DI ESEGUIRE LIMBALLO NEL MIGLIOR MODO POSSIBILE(OVE NON DISPONIBILE LIMBALLO ORIGINALE)E DAI MIEI FEEDBACK POTETE LEGGERE TESTIMONIANZA DI QUESTO il pagamento deve avvenire entro 3 giorni dalla aggiudicazione, trascorsi 4 giorni sarà fatta segnalazione a Ebay di offerente non pagante e loggetto verra rimesso in vendita INTERNATIONAL BUYERS WELCOMESOLD AS IS - NO RETURNPLEASE ASK FOR SHIPPING COSTpayment within 3 days

MSRP: $25,000 for the pair Used, mint condition Uses IEC C19 power cables (Included) Including extra set of tubes. Ships in original box. Will ship individually (two separate packages) @ 90 lbs each, totaling 180 lbs. Since any listing 150 lbs and above is required by eBay to be classified as freight, and these will not be shipped freight, the initial shipping price is not accurate. Please DO NOT PAY without receiving an accurate quote from us. Manual: https://audioresearch.com/wp-content/uploads/2021/08/REF250_Manual.pdf Specifications: POWER OUTPUT: 250 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 250 watts, below .04% at 1 watt. Approximate actual power available at “clipping” 270 watts (1kHz). (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if 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) 5Hz to 70kHz. FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.5Hz to 110 kHz. INPUT SENSITIVITY: 2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms.) INPUT IMPEDANCE: 200K ohms Balanced. OUTPUT TAPS: 4, 8, 16 ohms. OUTPUT REGULATION: Approximately 0.9dB 16 ohm load to open circuit (Damping factor approximately 10). OVERALL NEGATIVE FEEDBACK: 8.8dB. SLEW RATE: 20 volts/microsecond. RISE TIME: 1.5 microseconds. HUM & NOISE: Less than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output). POWER SUPPLY ENERGY STORAGE: Approximately 900 joules. POWER REQUIREMENTS: 105-130VAC 60Hz (260- 250VAC 50Hz) 770 watts at rated output, 1000 watts maximum, 380 watts at “idle,” 1 watt off. TUBES REQUIRED: 3 Matched pair KT120 (Power output V1-6); 1 Matched pair KT120 (Driver V8- 9); 2 6H30 (Gain stage V7 and Regulator Driver V10); 1 6550C (Regulator V11). DIMENSIONS: 19 (48.3 cm) W x 8.75 (22.2 cm) H x 19.5 (49.5 cm) D. Handles extend 1.5 (3.8 cm) forward Important Note on Shipping: eBay estimates of shipping costs are not accurate and do not include insurance or adult signature requirement. Please contact us for a more accurate quote. No shipping to Vietnam, China or Hong Kong. Please do not submit payment until you have received an invoice from us with accurate shipping costs. We reserve the right to hold the item or cancel the transaction if actual shipping costs are not paid.

Works excellent sounds amazing audio research ref 3 pre amp in original box and power cable included