I have tried different ax7 tubes different settings etc. I am not trying to be contra to mesa fans but my 2 Fender prosonics blow it away sound wise right now. I want the M5 to work out i spent a fortune. I use a vetical Mesa 2x12 an American Standard Strat and a les paul. I am very unhappy with it at performance volume. When I am home in the apt it is at a low volume and it sounds great When I gig I can't wait for the gig to end or go get the prosonic from the car. Are there mods I can get to make the treble response normal or do I have pump the treb down? when I do that I lose crunch. My strat sounds like an accoustic at times.