As a Terror Bass user, i'm using it mainly for that early seventies classic rock sound, and with two 12AX7's in the pre-amp, it adds more than enough grit. If you keep the gain down a smidge, it will do cleaner sounds. And at 500w into 4 or 8 ohms, it has enough headroom for pretty much any gig.
Signed, A happy OTB user.