I purchased this Xiang Sheng 728A preamp new while waiting a year for my boutique integrated tube amp to be custom built. Allegedly the same circuit design as the famous Marantz 7 preamp, this unit sounded fantastic as a preamp into my NAD power amp into Klipsch Cornwall speakers. Lot of air, separation and wonderful soundstage from this combo and wonderful tone and instrument detail to boot. The Chinese certainly can make some very quality gear! Uses 6 tubes in the preamp circuit (the orange tube glowing in the round window is just for show and is not part of the preamp circuit. Relatively low use original tubes with roughly 50 - 60 hours of use - should be loads and loads of life left on them. Cosmetically beautiful except for one slight rub/scratch on top of case - shown in photos. Functionally 100% - no issues. Has a built-in warm up cycle - power light blinks red until the tubes are up to temp then begins to blink blue and finally stays all blue when you are ready to rock. 4 inputs switched with relay switch. Tone circuit bypass button. I especially loved the dual outputs - one to my amp and one directly a subwoofer or another amp - great flexibility to have two outputs. Comes with original power cable and instruction book. I was quite happy with this unit and am passing it along now that I have my fancy and expensive integrated tube amp. Happy to answer any questions.

Very low hours, non-smoking environment. Non-remote control unit. Audiophile parts. High-end sound, smooth, fatigue-free. Input impedance:100 Kohm Output impedance:600 ohm Total Hamonic Distortion:less than 0.01% Frequency Responses:20Hz-30KHz+-1dB Signal to Noise Ratio :90dB Input Jack: 4 groups Output Jack: 2 groups Supply Votage:AC110/220V 60Hz/50Hz. Size:435mm(width)*90mm(height)*290mm(Depth) Used tubes :12AT7*(2PCS),12AU7*(2PCS),6Z4*(2PCS) Net weight: 5.6kg Made in China

728A XiangSheng Vacuum Stereo Tube HIFI Preamplifier. Tested and working. Came from the Jim Fosgate Museum collection. He was a friend of mine. See my other listings for more items from the collection!

We are Emersive Audio We have for sale here a Brand New Xiang Sheng 728A HiFi Tube Preamplifier. This is an open box unit in excellent working and cosmetic condition. ( this is how I acquired it )The preamp has a matched set of RUBY 12AX7 preamp Tubes installed along with new SGEL tubes in the remaining tube ports. I was planning to build a small 2 channel hifi system for my office but the reality is I dont spend a lot of time in my office and prob wont get much use out of such as system. So here it is for sale for someone that really is looking for such a preamp to buy. Here are the listed specs for this unit:- based on famous Wada Shigehos Style Electric circuit, which was Introduced by Wada Shigeho in the early 1960s and gave an excellent performance.- Regarding the Wada Shigehos Style Electric circuit, it not only still keep the good features of Marantz7,meanwhile have superior features in Dynamic,- High / Low Frequency Response, Resolution and Signal to Noise Ratio as compared to Marantz7.- But apart from above features, its also not inferior to Marantz7 in Sound stage and airy feeling.- Adopt 4pcs paper in oil capacitors and German WIMA capacitors for coupling effect, make the sound warm and delicate.Specifics:- Brand: XiangSheng- Model: 728A- Input Power: AC100V-AC240V available 60Hz / 50Hz- Output Tube: 12AT7 × 2,12AU7 × 2,6Z4 × 2- Input Sensitivity: 400mV- Input impedance: 100K- Output Impedance: 600 ohm- Signal / Noise Ratio: 90dB- Frequency Response: 10Hz - 30KHz- Humidity: 35% -80%- TMD: less than 0.01%- Input Jack: 4 groups- Output Jack: 2 groups- Weight: 8 kg- Size: W430mm × H80mm × D290mm- Color: Black/ white,will be delivered randomly Auction Rules All items are packed for safe shipping and will NOT be shipped insured unless you ask for it and pay for shipping insurance! All items are as described in the auction and sold on an as is basis unless otherwise described. If you paid for insurance and something is damaged in shipping we will work with you to file a claim with the shipping company. 1. IF YOU HAVE 0 FEEDBACKS YOU MUST EMAIL US BEFORE YOU BID OR YOUR BID MAY BE CANCELED. 2. IF YOU DONT WANT THE ITEM THEN SIMPLY, DONT BID! 3. IF YOU DONT PLAN ON PAYING FOR THE ITEM THEN DONT BID. 4. IF YOU WIN THE AUCTION AND DONT PAY OR COMMUNICATE YOUR ACTIONS IN A TIMELY MANOR WE WILL REPORT YOU TO EBAY AND GIVE YOU NEGATIVE FEEDBACK, NO EXCEPTIONS! Arizona residents will have to pay sales tax, as we are a licensed AV dealer and have to COLLECT sales tax. We don?t charge sales tax we just collect for Uncle Sam! ----We reserve the right to cancel any bids, stop any auction early for whatever reasons at any time during the run time of the auction!--- Winning bidders please email us at the end of auction with your shipping address so we can tell you how much shipping will cost. We will only charge you exactly what it costs us to ship to your exact location, nothing more.

728A XiangSheng Vacuum Stereo Tube HIFI Preamplifier. Works like new

728A XiangSheng Vacuum Stereo Tube HIFI Preamplifier. Works like new

728A XiangSheng Vacuum Stereo Tube HIFI Preamplifier. Works like new