For those with master volume amps, I have to ask do you really think your amps sound that great cranked all the way, or is that just the general saying around here? Both my JMP 2203's, one with EL-34's & other with 6550's, sound glorious with the MV from 2.5 to 4, then exponentially worse from 5 to 10 (the EL-34 version not as bad as the 6550 version). I just never see a reason to push the master volume past 4 seeing as I'm already reaching power tube breakup by then (or at least I'd like to think I am). I can crank the volume all the way to 10 without running the risk of bothering neighbors due to my location, but I just see (or hear) no reason to. I've run them on 4x12's loaded with either G12M-25 (Pre-Rola Greenbacks from '69), G12T-75's, or Vintage 30's. Perhaps I need to try other speaker configs, because at a MV of 5 these cab speakers aren't sounding all too happy. Just curious and would like folks' opinions, not meaning to insult or flame. I couldn't imagine pushing a non-Master Volume amp and expecting a decent tone while heavily pushing any of those speakers without an attenuator. Perhaps there's something wrong with my amps, or ears?