I'm considering another ground-up amp, and I have an old chassis and enclosure that I want to use for it. If there was a short list of bass amp must-haves, what would be at the top? Now, some design goals: It's only about 13x10x8 inside there, and the enclosure has three knobs, two connectors, and 2 switches. I'm thinking with its size, 40-50 watter might be a stretch, but I'll see what the guy says. Treble, Bass, Gain. Lo gain, Hi gain. Power on and < what for this other switch?> I was thinking half power or standby. My intention is as much clean power as he can get me, but to drive kindly without too much grit when it does get pushed. My questions are more, "what bones and guts will give a better chance of reaching this goal", and "Are there 'kinder' tubes that help with keeping the overdrive milder", and "Besides making sure the OT is beefier, are there other components of a bass amp that I need to make sure to mention when discussing the design?" Thanks for input. It will also be for sale or for keeping, whatever. The goal is enough power for a respectful trio or quartet, with the right cab; and just a simple great sounding "plug in and turn up" amp without any bells or whistles. Crossing my fingers on how much power we'll be able to put inside it! Might end up with a 20 watter.