good amp for step dad?

[lilfiend]

my step dad has a bass guitar and electric drum set and he recently sold his huge amp, it was a tube amp from 1975 or something, he's sad that he sold it now and i was wondering if there is any cheap, smaller, good amps out there, not cheap like cheap sound but cheap for good sound. also his old amp was about 3-4 feet diagonal so smaller then that if possible

thanks in advanced! wish i knew more about this sound stuff