My amp arrived yesterday and the bag o' bits from Maplin just turned up as well.

I'm not sure yet whether to just bang it into the new case or to mod it first, reading DIYaudio it appears you need to rebuild the whole thing.

I'll probably just stick to 'sorting' the bass roll off reported on DIYaudio, it seems to be relatively easy by replacing a couple of caps, I might manage that if I can remember how to work the soldering iron.

For power I was just going to use a 12v regulated plug-in thing unless there's a better suggestion out there.