Audio Research Ref 750 SE Tube Mono Power Amplifier - PAIR MSRP: $70,000 These amplifiers are in excellent condition and function flawlessly. They are consecutive serial number amplifiers and they include their original packaging, user manual, tubes (0.2 hours), and 20a power cords. These are hailed as some of the best tube amplifiers in the world and they rarely come up for sale. This pair has ultra low hours (0.2 total hours) on them and are nearly brand new. 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. Listening to Reference 750 SE monoblocks in a high performance system is a transformative experience; under total control, speakers disappear from the listening room and the listener is transported into a three-dimensional realm where music takes on a palpable, tangible form. Details from source material are resolved against a black background, painting images in space with vivid reality. Bass becomes the foundation on which this living performance develops, produced with startling temporal and timbral accuracy. Here is the breath of the performer, the pick against the string, the brilliance of a full orchestra. The Reference 750 SE is prepared to deliver 750 watts of power into speaker loads of 4, 8 and 16 ohms. This is achieved by the use of a massive, custom- built power transformer delivering current from sixteen KT150 vacuum tubes. Thanks to extensive testing and strict selection of tubes, the amplifier requires little maintenance and obviates the need for costly and sonically deleterious automatic bias systems. Power supply regulation is also achieved by 6550WE and 6H30 vacuum tubes. Tube bias is controlled by two KT150 tubes, each driving a bank of eight tubes.POWER OUTPUT750 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 750 watts, below .04% at 1 watt. Approximate actual power available at “clipping” 850 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) 15Hz to 150kHzFREQUENCY RESPONSE(-3dB points at 1 watt) 1 Hz to 200 kHzINPUT SENSITIVITY4.6V RMS Balanced for rated output. (24 dB gain into 8 ohms.)INPUT IMPEDANCE200K ohms BalancedOUTPUT TAPS4, 8, 16 ohmsOUTPUT REGULATIONApproximately 0.5dB 16 ohm load to open circuitOVERALL NEGATIVE FEEDBACK13dBDAMPING FACTORApproximately 17DISTORTION-SLEW RATE20V/µsRISE TIME1.5 µsHUM & NOISELess than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output).POWER SUPPLY ENERGY STORAGEApproximately 1300 joulesPOWER REQUIREMENTS105-130VAC 60Hz (260-750VAC 50Hz) 2100 watts at rated output, 2400 watts maximum, 800 watts at “idle”.TUBE COMPLEMENTREFERENCE 750: (8 matched pairs) KT120 power output, (1) 6550WE regulator, (1) 6H30 regulator amplifier, (1 matched pair) KT120 driver, (1) 6H30 follower. REFERENCE 750 SE: (8 matched pairs) KT150 power output, (1) 6550WE regulator, (1) 6H30 regulator amplifier, (1 matched pair) KT150 driver, (1) 6H30 followerDIMENSIONS13½ (34.3 cm) W x 23 (58.4 cm) H x 20.8 (52.8 cm) D. Handles extend 1½ (3.8 cm) forward and rearward.WEIGHT170 lbs. (77.2 kg) Net; 395 lbs. (180 kg) per pair shipped weightCheck 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.

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; Black Product SKU: 53020 Voltage: 120V # of Owners: 2 Service History: None Serial Number: 73106604 Age: Unknown Tobacco Exposure: No MSRP: $9000 Cosmetic Description: Good cosmetic condition with some minor visible cosmetic wear including a few minor scuffs on the faceplate along with on the top edge of the left meter. A few minor scratches on both handles. There is a minor scratch on the top surface near the front edge. This item shows some wear consistent with its age but is still presentable and sounds wonderful. What is Included: Amplifier, Four Tung-Sol KT120 tubes, Two Sovtek 6H30n-EB tubes, Power cable, Factory packaging Other Notes: This is not the SE version. A few words kept coming back to me during the three-plus hours I listened to the Reference 75: purity, subtlety and completeness. This deceptively simple, moderately powered circuit held its own with any amplifier I have ever heard and never began to break a sweat in doing so. It constantly made me, not just allowed me to, let down my guard and bask in music for music’s sake, and that music emerged from silky-silent backgrounds that allowed retrieval of the tiniest details. -Paul Bolin, The Audio Beat 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 75 Stereo Tube Power Amplifier – MINT Condition. The amplifier is very clean and in MINT Condition – has no scratches or dings. The connecting signal wires between the balanced connections and the board were upgraded to solid core pure silver with untreated cotton dielectric sleeves. Tubes have appr. 1000 hrs and still sound phenomenal. The amplifier comes with original power cord, manual, bias tool, original screwdriver and white gloves. Also included are the original ARC signal wires that were replaced. The amplifier will ship in its original double-boxed packaging. I am the original owner and am selling because we relocate to Europe. Please email me with any questions.

Audio Research Ref 75 Stereo Tube Power Amplifier – MINT Condition. The amplifier is very clean and in MINT Condition – has no scratches or dings. The connecting signal wires between the balanced connections and the board were upgraded to solid core pure silver with untreated cotton dielectric sleeves. Tubes have appr. 1000 hrs and still sound phenomenal. The amplifier comes with original power cord, manual, bias tool, original screwdriver and white gloves. Also included are the original ARC signal wires that were replaced. The amplifier will ship in its original double-boxed packaging. I am the original owner and am selling because we relocate to Europe. Please email me with any questions.

Audio Research Ref 75 Stereo Tube Power Amplifier – MINT Condition. The amplifier is very clean and in MINT Condition – has no scratches or dings. The connecting signal wires between the balanced connections and the board were upgraded to solid core pure silver with untreated cotton dielectric sleeves. Tubes have appr. 1000 hrs and still sound phenomenal. The amplifier comes with original power cord, manual, bias tool, original screwdriver and white gloves. Also included are the original ARC signal wires that were replaced. The amplifier will ship in its original double-boxed packaging. I am the original owner and am selling because we relocate to Europe. Please email me with any questions.

Audio Research Reference 75SE Stereo Tube Power Amplifier; Ref 75 SE; Silver Excellent working condition. Small scratch on top edge but overall in great shape. Power cable included. Will ship in an audio research reference cd box and packaging which is the same size of the amplifier. Tube will be removed and pack separately. Will double box for extra protection.

Audio Research Ref75 SE Stereo Power Amplifier MSRP: $10,000 This amp is in excellent condition and works flawlessly. It comes with the owners manual, tubes, screw driver, power cord, and original packaging. Do not miss out on the chance to own this incredible amplifier at a fraction of retail. Check 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.

Up for sale is my Audio Research Reference 75 in very good condition (8/10) in the desirable black color to match your rack. The unit has the top grill for the SE model but it is indeed a standard Reference 75 with the KT-120 tubes. The only item of note is that the knobs that turn from operation to bias the tubes is misaligned but they work with no issue. I am the second owner with purchasing the unit from TMR and it will ship double boxed (original box with manual and the TMR box) via UPS. Hours on the tubes are unknown but they are in good condition.

Follow us| Sign up for our newsletter Audio Research Reference 75 - Audiophile Tube Stereo Power Amplifier w KT-150 For over 20 years High End Audio Auctions 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! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Audio Research Reference 75 Details & Testing Notes Cosmetic Condition:8/10: Very Good - flawless front face, other minor imperfectionsCosmetic Notes:Unit has a scratch on rear of top cover. Binding posts show wear from a tool tightening them. Very good overall physical condition. Please see all high resolution photographs, including detailed inside shots, below.Functional Notes:Functions as intended and sounds excellent.Service Performed:- Bias Adjustment - Confirmed it remains steady after warmup. - Each KT-150 tube tests good with same strength and plenty of life left.Voltage:120V 60 HzSerial #:45285Original Box:YesManual:YesPower Cord:YesShipping Method:FedEx Ground (Domestic) / USPS Priority, Ebay Standard Delivery (International)Shipping Weight (lbs):63 (27x24x19) 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))

Follow us| Sign up for our newsletter Audio Research Reference 75 - Audiophile Tube Stereo Power Amplifier w KT-150 For over 20 years High End Audio Auctions 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! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Audio Research Reference 75 Details & Testing Notes Cosmetic Condition:8/10: Very Good - flawless front face, other minor imperfectionsCosmetic Notes:Unit has a scratch on rear of top cover. Binding posts show wear from a tool tightening them. Very good overall physical condition. Please see all high resolution photographs, including detailed inside shots, below.Functional Notes:Functions as intended and sounds excellent.Service Performed:- Bias Adjustment - Confirmed it remains steady after warmup. - Each KT-150 tube tests good with same strength and plenty of life left.Voltage:120V 60 HzSerial #:45285Original Box:YesManual:YesPower Cord:YesShipping Method:FedEx Ground (Domestic) / USPS Priority, Ebay Standard Delivery (International)Shipping Weight (lbs):63 (27x24x19) 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))