my head unit advertises MOSFET 50W x 4, but idk if that's rms or max. regardless, an amp couldn't hurt anything... plus it'll get me all set up for upgrading down the road, the RCA cables and speaker wires will be back in the trunk in case I decide to swap amps some time. Idunno, I guess I'll hook it up and if it doesn't work, I'm only out 30 bucks.