I seem to remember someone else mentioning this, but i can't find the thread, so here goes: I have a 400+ that I'm using right now, and I'm playing with a drumer and guitar player/vocalist. the guitar player is playing through a fender deville (i think it's 60w). I'm playing a warwick thumb BO 5 through an ampeg 410hlf, no fx right now. now, I can't keep up with them... the 400+ seems to distort at about a medium volume.... it'll even distort at a low volume if I really dig in hard. if I turn down the input gain, i still get the distortion if i really dig in. channel #2 input gain is about 6, master vol about 4-5. my eq is fairly flat, but it doesn't seem to make much diff where it is. i do notice that the more mids i have in the sound, the more distortion (or maybe the more i hear it) is this normal? Is there any way of finding out if the tubes are suspect without bringing it to a tech?