SA-1800 800W USB SD FM Car Stereo Audio Amplifier
Hi,i have bought several off these diffrent mini amplifier,lepai and some other brands,lepai is ok.this was the only one that could take 10 amp power adapter to drive 4 speakers.i hooked it up on arrival with a 2 amp adapter and used to infinity car speakers,freaking wauw,plays veryvery clean an good and very loud,i then tried to hook 2 more on the amp,but due to the low power adapter on 2 amp it wouldn drive  them up.i still havent found a 10 amp power adapter,but im veryvery sure that this will drive my 4