I had one too and gigged/practiced with it, not the loudest amp ever, but with it being 300 watts at 4 ohms, it's never going to be, but I did run it at 8ohms at all times, usually via a Warwick 410.
Oh and actually I just noticed you are using a WCA211, I used mine with the profet 3.2, and it could only just cope with band practice.