I've tried out a couple of these little amps in the past and wasn't overly impressed, they sounded raspy to me - however Torres Engineering has an easy mod which really improves the overall sound of the amp (clean and overdrive channels), here's and excerpt from HC> take it for what it's worth, the mod is cheap and easy to install.
"I play blues/rock 'n'roll on a G&L S500 and Fender Tele. I really had no complaints with the amp before this mod except I thought it was a little harsh sounding at higher volumes. This kit fixed this problem and then some. The amp is so much warmer and open sounding. The overdrive channel,which to my ear was horrid,has been transformed into a very serious Marshall sounding drive channel. The clean channel finnally breaks up into a sweet tweed like overdrive when picked agressively. I can not overrate this mod,it's just amazing. I was thinking of buying a new amp,not now"