AUDIO RESEARCH SP8 VALVE PREAMPLIFIER This does power up but it emit’s a buzz through the speakers on both channels. I’m pretty sure the valve’s are in the wrong place as they don’t heat up. Also the chassis shorting pin is missing this won’t help with the buzzing. This did work a long time ago but has sat in storage for years now. Also the top lid is missing I have looked but can’t find it unfortunately. It’s in decent condition apart from what looks like glue on the front panel. Please see pictures for condition.

You are bidding on a Audio Research LS8 Line Stage. NOT WORKING PLEASE UNDERSTAND THIS WAS WORKING BUT AFTER A VALVE CHANGE 6922/6DJ8 It seems to have developed a fault the volume produces a crackle when used But silent if you use the tape out We could send this to our engineer but it would cost me at least £250 £300 to get it fixed We value the item at £899 without a fault Hence the Low price Bid with confidence and thanks for looking

Audio Research VT80 Power Amplifier, Manufactured 2017, One Owner. Taken in on trade for an entirely new system by the dealer that sold it to owner originally. Manufacturers description: The VT80 is the much-anticipated amplifier that finally allows the Foundation series to be shown as a complete system. Combining an enticing new esthetic with worry-free operation and great audio performance, the VT80 is a vacuum-tube amplifier that will open doors to a new customer base.At the heart of the VT80 are two important new features that have never been offered before by Audio Research. The first is a proprietary auto-bias circuit developed entirely in-house by our engineering department. Simply drop in the tubes and the VT80 will adjust bias for each output tube. The circuit automatically adjusts for tube wear or fluctuations in the power in real time. It will also work for different types of output tubes, including 6550, KT88, KT90, KT120 or KT150. The adjustment range is wide, but matched tubes from Audio Research still provide the highest performance. Finally, an auto-bias circuit that works in real time and does not compromise performance! The second new feature includes fusing of each output tube. In case of a fault condition in a tube, an easily replaceable fuse will blow, not a resistor. This is what we mean by worry-free operation. With the beautiful new look, the flexible connection options, and the great new features, thrilling audio performance remains our primary goal and the foundation upon which we were built. Designed as part of the Foundation series, the core of the VT80 is adapted from the Reference 75, including the same power and output transformers, similar circuit topology, and many of the same parts. The 75 watt-per-channel VT80 offers striking dynamics, powerful bass, and natural clarity combined with a very holographic presentation. The result is sonically breathtaking and provides a new reference in its price range. TYPE Tube stereo amplifier INTRODUCED 2016 OPTIONS - MSRP (US NEW RETAIL) VT80: $8,000 Local pickup or delivery to within 2 hours of Newark, DE may be arranged. Shipping to USA only unless purchased through eBay’s International Shipping Program. Includes: Original box and packaging.

Audio Research Model LS8 MKII Preamplifier original box and manual NEW CONDITION. This device is in new condition, selling because I purchased a new preamplifier. The preamplifier was upgraded to a MKII in 2000, and you can see proof of this upgrade in the photos. It comes with the original manual, quality assurance certificate and original box.

Acoustic Research AR48S Vintage Audio Speakers HiFi Audiophile. Classic high quality speakers from Acoustic Research. In full working order with incredible sound. The odd mark as expected with age as these are now over 40 years old, nothing major and in very good condition. Pickup preferred near Glasgow but willing to post. It will require 2 boxes due to size and weight, hence the postage charge. Will be securely packaged to avoid damage in transit Please note postage quote is for mainland UK only including global shipping centre,Highlands and Islands will be more Any questions please ask Check out my other items for more great bargains

Conrad Johnson Premier8 Audio Research 5SE,LS15,Thiel CS2.4 Marantz SA8005 Set. A VINTAGE CLASSIC CONDRAD JOHNSON DESIGN PREMIER 8 MONO TUBE AMPS 275 WATTS RMS PER AMP VERY GOOD CONDITION SHIPPING VIA TRUCK FREIGHT ONLY --------------------------------------------------------------------- This pair of CONRAD JOHNSON PREMIER 8 mono tube amps is in VERY GOOD condition! The sound is EXCELLENT! One of the amps operates per spec, the other plays with its bias lights lit. That 2nd amp can only be biased by removing the bottom cover and individually testing each tube with a meter – recommended for technicians only. Power Output ­ 275 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Power Output (model XS equipped with EL34 output tubes in triode mode) ­ 130 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Response: 20Hz to 20kHz, +/- .1 dBInput Impedance: 100 kOhmsHum & Noise: 96 dB below rated powerMechanical: 21 D x 19W X 9.5 H Weight: 90 lbs. Please see the photos as they are part of the description. This Premier 8 will include its original shipping cartons, but with hand-crafted packing and the original operation manual. The PREMIER 8 was made in1992 when they sold for $7000 a pair The CJ blue book value is $10k The Premier Eight used premium quality component parts throughout. The power supplies, including the main storage reservoir, used only polypropylene and “cjd” polystyrene capacitors as opposed to the traditional deployment of electrolytic capacitors. The audio circuit consists The buyer is responsible for all shipping charges. https://www.youtube.com/watch?v=_0-FUr4iZBc

Audio Research Model LS8 MKII Preamplifier original box and manual NEW CONDITION. This device is in new condition, selling because I purchased a new preamplifier. The preamplifier was upgraded to a MKII in 2000, and you can see proof of this upgrade in the photos. It comes with the original manual, quality assurance certificate and original box.

Acoustic Research AR18BX Vintage Audiophile Speakers in black. Just been refoamed mid/bass drivers as can be seen. Centre caps are on order. - NOW REFOAMED! They sound fantastic. Any questions please ask.

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.

Referencia absoluta.y embalaje original. Una etapa tiene vlvulas kt 120 como nuevas!! . Muy pocas horas. Puestas en Sarte Audio .

Audio Research preamplificatore valvolare LS28 Silver. Vendo per passaggio a reference stupendo pre valvolare. Ex demo Audio Natali acquistato nel 2022. Condizioni estetiche e operative eccellenti. 10/10 Valvole 800 ore di utilizzo. Imballo originale. Telecomando Spedizione o ritiro a domicilio. Qualsiasi prova.

Audio Research Model LS8 MKII Preamplifier original box and manual NEW CONDITION. This device is in new condition, selling because I purchased a new preamplifier. The preamplifier was upgraded to a MKII in 2000, and you can see proof of this upgrade in the photos. It comes with the original manual, quality assurance certificate and original box.

I am sell my tube phono pre-amp Audio Research PH 8, silver, top condition, original packaging. Device comes from non-smoking household and has been treated with care. Original packaging is available.