Hi, I just got one of these Ampegs last week and even gigged with it last Sunday. I'm really impressed with the amp and it's tone. I normally play Hartke amps (lh500, ha3500). The Hartkes are very transparent in tone compared to Ampeg. The Ampeg just has the complex mid range to it that I'm not fully used to. So there's this 5 position switch which gives you different mid voices and I'm only really noticing a difference when you crank the mid knob all the way. If I drop it down below 8 than I really don't hear much of a difference. For example. I have it on position 5 which gives me a nice high mid boost. It's a great sound with the mid knob all the way up and the bass and treble set at 1:00. If I turn the mid knob down I lose the mids and some treble and it sounds much darker. Is this normal for this amp and other Ampegs? Perhaps Jimmy Miller or any other Ampeg aficionado can chime in.