I recently got my 50w miniMASS in the mail and I'm way more than impressed. Matched up with my HRD it's pure sex. There's a sound clip on my profile. I set my amp to the point where cleans are still clean but can be distorted with a hard enough attack. I use the clean channel the whole time. The distortion comes from a BBE greenscreamer.

This model doesn't have a tone stack, but it does have a treble booster which I set on +3 db, it's very useful.
I don't give a shit if you listen to me or not