All good so far! It's my first experience with a dedicated power amp, so I don't have anything to compare it to, but I'm happy with the sounds I'm getting so far.
I've only used it a low volumes, but even then it seems to get warm quickly. No fan, you see. I've read similar comments over on Talkbass but it doesn't seem to have let anyone down through overheating at gig volumes so I'm not too concerned.