Thanks for the response, Mr. Jalapeno!
The only problem I've had with the amp is a pronounced amount of hiss that it produces. What compounds that issue is that I go direct to the P.A. board via a Direct Box (so I can also hear myself through the stage monitors). The hiss gets to be pretty bad...so much so that the Line Level out knob on the back of the amp can only be turned up to about 8 o'clock, when others say theirs is at about 12 o'clock. Someone recommended cleaning all input jacks with electrical cleaner...if THAT doesn't work, I'll have to try a HUSH pedal and go from there...but so far, it hasn't been what I expected. It hisses so much that when I tried to use a $35 Behringer Direct Box with 4x12 cabinet simulator, the cab sim feature was unusable (the hiss was 10 times worse than normal)...it evidentally works on some different EQ principle that can pronounce noise/hiss in the signal. So THAT was a major waste of money!