Hi folks, I'm contemplating starting a first amp build as a hobby, probably starting with a Champ or something along those lines as a first, but I am brainstorming some designs for much further down the road-- something to "work up to", as it were. The "Ultimate" design concept I am working toward would be a 3-channel (likely two modes per channel) head with multiple power modes. Obviously, this is not something that will see fruition anytime soon, but I'm still brainstorming so that I can narrow-down my research into circuit design and frequency response. Can anyone point me to some American-made amps from the late-70's through today that are considered desirable for their gain structure? This will be a solid-state-rectifier design, so the Mesa Recto's and Boogie's are not at the top of my list (they're great amps, but I highly doubt I can do what Randall does as well as he does what strikes me as a signature breed of design). Two that come to mind are the Soldano SLO-100 and the Peavey 6505. Does anyone know of any others I can look into (and, hopefully, can find a schematic on)?