I’m back after a long hiatus for summer. For now I’ve set aside the tone control design and am working on combining the previous B-17 preamp with a solid state amplifier design. Here is the first cut – please don’t try to build this amp as the exact component values, etc. still need work.
The power amplifier is a standard 3-stage design with an old-school quasi-complementary output. I picked the venerable 2N3055 output transistors to start.
As I mentioned earlier, this circuit still needs a lot of analysis and design work before it is ready for building. For now it is useful for LTSpice analysis and trying out concepts.