i might be selling a usx 800f amp if the offer is good. i used it to power 2 alpine type r's. i dont have the original box or the papers.
specs
OUTPUT POWER
RMS, per channel @ 4 Ohms @ 12.9v input 300Wx2CH
RMS, per channel @ 2 Ohms @12.9v input 400Wx2CH
RMS, Bridged Mono @ 4 Ohms @ 12.9v...