I've read that there was some problems with inputs on the m-pulses, (SMASH! You know if you're out there.) could you explain please. I did a search, and could't find anything about this, and now I'm paranoid, and probably overanalysed my amp a little to much. I've noticed the tone between the active and passive inputs are different, even when I adjust the gain to compensate for the -20db in the active input. Is this the problem that someone was talking about? The passive input is really clean and clear, but the active is really creamy. I did read a post once that stated only active basses sound good through the m-pulse, maybe the input was the culprit. I'll bet I get no reply's, just because I rambled on about nothing, it's happened before, honest.