18 watts hybrid, 8inch speaker and a 12ax7 valve. Sounds preeetty nice for £79, and it gets pretty damn loud. And it's very small and very portable. Still available on sale from Purple Turtle Music if anyone is interested. http://www.ptm247.com
Being able to switch the master volume out does seem like a terribly good idea, though. Live and at practice it's probably going to be switched out all the time. I'm taking it to practice tomorrow to split my signal between this and my Classic, so I'll have it turned up pretty loud and give it a proper test.