Audion Quattro Triode Premier Signature series Pre/ Phono is considered by many to be one of the best Pre Phono stage in the world. See Arthur Salvator "High End Audio" web page. Arthur owned "the premier" up scale audio retail store in Toronto Canada for many years. He has retired to a warmer climate but is still passionate about High end audio, and best of all has no bias like many audio rags in the market. Even if you don't buy this please add his site to your favorites because you will find a wealth of knowledge that comes from Arthur and other contributors in Audio today. The Quattro is 4 pieces; separate phono/ line stage for left and right channel each having its own power supply. The gain on the phono stage is unbelievable. Tube Complement is included 4- E88CC NOS Siemens per channel. I also have an additional 8 more tubes 88s and 6922 tubes I will include, however my preference are the matched Siemens. You will notice in the photos brass devices over the tubes with strands of copper foil. These are tube anchors are designed by Maple Shades Audio specifically for EC88 or 6922. They work beautifully to anchor and ground the tube, substantially reducing tube resonance/ vibration, creating a much blacker background. These are included with the sale. I highly recommend a solid brass anchor for any tube. Maple Shades don’t’ make one for every tube size but they are well worth the investments. It comes with Instruction Book and original cartons. The unit is 10 years old. The gold plated finish is worn. It has been used at a moderate level, but primarily because age I have listed it as a 7 out of 10. This unit creates a beautiful 3 dimensional sound stage in both width and depth that is honest to the music! It is not forward like many phono line stages have become creating unrealistic imaging, but remains centered creating an accurate sound stage with warmth, but not overtly. The best word to describe this unit is "Honest" to the music. I reveled in its serenity for 3 years. With in a short period of time it will become a forgotten component as you listen. That is the best test for audio today. Any piece of equipment should get out of the way of the music. It has been upgraded over the 10 years. All the coupling caps were changed to Teflon and the power supply was quadrupled in energy storage. These mods make the unit I'm selling extremely close to the newer version at less than 1/2 the price. Age is the big difference and the newer version has lower gain making it slightly quiter. The previous owner was Israel Blume, owner of Coincident Speaker Technologies, who took impeccable care of the unit as I have since acquiring it from him 2 ½ years ago. I am selling the unit because I am building a second system in a separate listening room and need the cash. I will be replacing the Quattro with a single dedicated phono stage only for the time being. This will help the cash flow with the 2nd project which is all digital. Whoever buys this unit will be extremely happy. Additional photos, copies of the instructions etc. can be sent upon request.