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I don't have anything technical to post yet and I'm fairly sure that there are only a handful of members on here that will dig this build thread. That's ok with me. I really enjoy working with vacuum tubes. They just sound and feel right. Figuring out the point to point wiring layout and experimenting with different component values, B+ values, and different tubes is quite fun.
My son and I have been getting into learning to play electric guitars and I'm presently looking for a decent used bass guitar (for me) on craigslist.
Right now we have two crappy little solid state practice amps. It would be fu to build a 100 Watt tube amp with a Marshall stack but the prices for the output stage parts has gone over the top IMHO. The power and output transformers plus the output tubes combined cost more than a decent playing/sounding guitar!
Luckily I have a bunch of small preamp tubes, small transformers, a few class D amp boards, and laptop bricks laying around. That's where this project is headed. First step is to get the preamp tube stages and class D board gain stages right. After I get that part right I'll work on getting a tone stack that I like. Luckily the schematics for most Fender, Marshall, HiWatt, Vox, etc amps are plublished. So I can mix and match the front end parts to get what I like.
The ouput stage is simple really. I've built enough class D amp modules with switching power supplies (laptop bricks) to know where to go with that.