Here's an amplifier that I build back in the day based on an article that appeared in Issue #3 of Sound Practices entitled "A 5 Watt 6BX7GT Triode Amplifier" by Ed Warden. The main differences here are: (1) this is a stereo amp whereas Ed built mono blocks and (2) this amp has vacuum tube rectification as opposed to solid state.The power transformer is a robust unit from Allied Electronics and the vacuum tube rectifier is a 5V4. There are separate LC filters comprised of Hammond chokes and Nichicon capacitors for each channel. The input tubes are 6SL7WGTs and the the output tubes are 6BX7GTs, obviously. The output transformers are metal cased units - donors from a hi-end vintage integrated amp. All of the coupling capacitors are Mundorf Silver and Oil - somewhere in the neighborhood of $250 worth themselves. The RCA jacks are Vampire and the binding posts are 5-way types. All of the tube sockets are ceramic. The balance of parts are well known quality types. This stereo amplifier is a solid 5 watts - all triode, push-pull (PP) watts that is and, as a result, works well with a wide variety of speakers. The amplifier is built on a chassis measuring 16 inches wide by 8 inches deep by 3 inches tall. Overall height is approximately 7 inches. It weighs 13 pounds. The guy that owns it just traded up to a much more expensive amplifier from me, so I am helping him with the sale. I just ran the amp across the bench and through my system - it checks out fine. He is asking $750 shipped in the US. Feel free to call me at (513) 417-0130 should you have any additional questions.
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