Listen to it here
What I want to show you (conceptually) is how to use one of these as a portable mini guitar or practice amp that already has some good sounding distortion.
My last instructable (attempted) to do this, but I think the sound quality of that amplifier doesn't compare to this one. The distortion tone is a huge improvement, and the same concepts (switchable tone capacitors) can all be applied to this as well.
You can build this with or without a Volume pot, I chose not to since it doesn't get extremely loud to my ear after playing through a Fender SS tube amp (last pic). So I mean this isn't going to 'take over' as your main rig, and you won't be able to play to 500 people - but it's great for taking your electric guitar camping. Seriously. Try it. It's fun, be a guitar geek. Blaaaack Beauuuuuty is my main axe ; I hope you like ooogling her as well.