Ozzy Foster is the Vocalist and Lead guitarist for Sensible Volume and the main creative force behind all their work. 

Tom (DROID) Barry is the bassist for sensible volume and may very well be a alien from outer space, while he may not be real, he's real in our hearts and our souls. Tom Barry, Bass Extrodinair 

Not the amp, but he does indeed like the amp but does not use the amp. Oh and he plays guitar.

Drummer (maybe), sometimes hits things, sometimes misses, sometimes just stops playing completely.