It really does everything that you would expect, almost liquid sustain when you kick in the overdrive and boost, with some very nice clean tones and a bit more kick with the clean boost. The controls all make a difference and it seems to work really well with the TAD 6L6W-GC STR's (rather than the regular 6L6's), though I would like to try the new Groove Tube 6L6 GE's, which look very similar. I think it will sound really great when I have the 2x12, as it has a ton of power.