Selling a nice tubed headphone amplifier, Darkvoice 336SE. I paid $250 plus $75 shipping from the retailor in China about a year ago. Used it in my office at work a few hours a week until I became a victim of the recession. I have added Elna capacitors known as the "Fitz-mod" to eliminate tube noise, see the website Head-Fi.org for information on this modification which makes the majority of tubes very quiet. I will include a vast assortment of vintage tubes,12 6SN7's and 8 6080 and 6AS7 tubes to roll. The tubes alone cost over $250, included are metal base 6080's including a Bendix and Tungsol 6080, black glass and grey glass 6SN7's, a CBS 5692, a few Sylvania chrome domes, most tubes are from the 1950's and a few older tubes with Navy insignias. I used this amp with Sennheiser HD600's and Allesandro MS2i's, I hate to see it go, but I need to thin down the collection of "stuff". I will pack with care, double boxed, with the tubes well protected and packed seperate from the amplifier. I have 100% positive feedback on Ebay, manfred8 and Audiogon, Manfred88. Paypal preferred, no fees. USA sale only, buyer pays shipping, UPS ground. Thanks for looking! Tom Portland, Oregon