I used to own a prosonic for a while and can tell you that it's defintley a cool amp. It's all tube with a selectable output that give you options for 30 watts (tube rectified), 50 watts (tube rectified) and 60 watts (ss rectified). It definately has the fender mojo going on for the cleans and can melt down most marshalls on the gain side. The EQ is active, so it takes a little time to tweak and the reverb is outstanding. It's also a very LOUD amp.