Want a small tube amp. I've had normal Champs and that is not what I want. I want more clean and robust low end. Prefer to not go as far as a Princeton for cost and I dont need the power. So I'm considering various Vibro Champs, Super Champs etc. How do these hold up? I will likely mostly use it in the Duo so it doesn't need to hold up to a band. Are there any good clones out there? Who makes them? Red Knob Champ 12, I assume these are circuit board construction. Single 6L6 w/reverb but no vibrato. (this may fit well with what I want) SF Vibro Champ-Tube rectifier 1 x 6V6 Champ ll- SS rectifier, no vibrato. 2 x 6V6 Was the Champ 12 the only one 1 x 6L6? Any other suggestions for similar amps?