Fentac(TM) Lepy LP-S60 Digital Desktop Power Amplifier Car 4 channel 25W with IR Remote USB MP3 SD FM Wide input 9 to 14.4 VDC input voltage for many applications Up to 4 x 25W of output, 2-ohm stable All-in-one amplifier with SD/MMC card and USB input The faceplate mounted stereo 3.5 mm auxiliary input jack offers quick MP3 player and Smartphone connection