I took the Tourmaster 4212 Combo home for a week from GC and played it to see what I could get out of it. Was going to do some videos for You Tube but then work got in the way.... The clean channels on the Tourmaster Combo amp are very crisp, bright and CLEAN as loud as you can get - in a musical way. I have to say that the sound is much more like a good old 70's Fender Twin amp to me - very loud and clean with a tight bottom all the way ( I am comparing it to the '72 Fender Twin that I recently sold). I also found that both channels 1 and 2 were somewhat similar - I actually thought that they were identical with just a touch more gain available on channel 2 - but still no where near BMAN module territory. With my stock Les Paul Custom I could not get the clean channel 1 to distort at all without really digging in and having the volume up and the wattage down to 1/4 on the back. And jsut playing normally it was still very clean even with the gain all the way up. This is not the case with the BMAN module which breaks up fairly easily for me on channel A with the Les Pauls and the Fenders (strats & teles) without much help or digging in and the gain at about 12-1 O'Clock. You need the gain up a bit on the module in order to compete with the sound floor volume of the other module channels. In fact in order to get the BMAN to go spanking clean I need to run a compressor out in front.
I think a big part of the Tourmaster's sound is the power section which is classic 6L6 Groove Tubes crunch and headroom for days all the way. Also the speakers are 75 or 80 watt custom celestions which have their own thing going on -- where my standard speakers in the 4x12 cabinet are the V30s. So I am going to disagree with Jeff and say that the Tourmaster that I played at length definitely sounded more like a Fender Twin on the clean channels than the BMAN module that I have. As an aside here - I also had the T/D module a while back and could not get that to go spanking clean either. I think I traded it for the BMAN which is one that perpetually stays in the MOD100 head's first slot.