ATTENTION! This auction is for AUDIO RESEARCH AMPLIFIER CLASSIC 60 ONLY!!!!! See My other auctions.The new 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 ARC SP-16 Tube preamplifier W Remote. I purchased this tube preamplifier about two months ago, and it was only used for a few hours in my system. This preamplifier does have a tube phono section as well as a tube line level section. The tubes in the photo section are the stock electro harmonix 12ax7’s. I did swap the tubes in the line level section to some used NOS,RCA Tubes. Two of those tubes are 12ax7’s and one is a 5751. I would describe the sound as extremely clean and pristine. But I wouldn’t describe the sound is overly tube like. I would rate the condition at a 7/10. A few minor scratches is all. No returns and shipping to the US continental only!

Audio Research SP16 Pre-amplifier Tube / Valve Pre-amp with Phono Stage New Valves fitted. Serviced in June 2023.Perfect working order. Excellent cosmetic condition with hardly any marks(remote is not included) PaymenteBay, Bank Transfer, or Cash on Collection Shipping Prices (includes the cost of Full Insurance) Collection from Bristol BS7 - FreeUK Mainland from £19.90Worldwide from £29.90 It will be well packed and Fully Insured. Please Note: A signature is required on delivery Non UK Customers - Important InformationVAT, Customs Duty, or other Tax may be payable if you are buying from outside of the UK. Please check. It is the buyers responsibility to pay these charges. The full sale value of the goods will be declared on Customs Form *Returns*Returns are ONLY accepted if the item is faulty or not as describedItems are checked, photographed, and security marked before shippingI am confident you will find the listing is accurate Thank you for looking

Audio Research SP-12 Röhren Vorverstärker mit ECC88/6DJ8. Volle Funktion, optisch nicht mehr top.War vor 2 Jahren im Service und es wurde ein Kondensator im Netzteil getauscht.

Audio Research ARC SP-16 Tube preamplifier W Remote. I purchased this tube preamplifier about two months ago, and it was only used for a few hours in my system. This preamplifier does have a tube phono section as well as a tube line level section. The tubes in the photo section are the stock electro harmonix 12ax7’s. I did swap the tubes in the line level section to some used NOS,RCA Tubes. Two of those tubes are 12ax7’s and one is a 5751. I would describe the sound as extremely clean and pristine. But I wouldn’t describe the sound is overly tube like. I would rate the condition at a 7/10. A few minor scratches is all. No returns and shipping to the US continental only!