A fully discrete class A amp. The β22 stereo amplifier
This will be a work in progress for quite a while. I’m looking forward to how I’m going to mess this one up.
What to use it as a power amp for speakers? You can do that, but I believe the primary intent is for headphones or as a preamp. There are multiple configurations possible. I’m going with the 3-channel design which has an “active ground.” σ22 will be in the same chassis because I drew my laziness line there.