Behringer K450FX
"This super-compact, self-contained sound system is perfect for public address systems, keyboards, voice, or various drum/backing machines. 45 Watts of power are handled confidently by a headroom-rich 10' BUGERA woofer and a custom-made 1' driver, making sure that you can faithfully reproduce a broad repertoire of signals. The only thing this keyboard amp is short on is an exorbitant price."