Where do you usually have your MASTER VOLUME control set? Because I've been using my Mustang at low volumes, both on the gig and at home, I've been setting it pretty low. MASTER turned up to no louder than "3" or so. But last night I tried the amp with the MASTER on "10", thinking it might make the amp sound more like my old Fender amps with no master volume at all. And it did! Of course none of my presets worked anymore because now they were all bone-crushingly loud. (Boy this amp can get loud if you want it loud!) But after lowering the GAIN and VOLUME controls the amp sounded really good to me. I'm going to be doing some experimenting with this.