JBL GTR-7535 75W x 4 + 350W x 1 Car Amplifier 75 Watts RMS x 4 @ 4 ohms 100 Watts RMS x 1 @ 2 ohms 200 Watts RMS x 2 @ 4 ohms Subwoofer Channel: 4 ohms: 200 watts x 1 chan. or 2 ohms: 350 watts x 1 chan. Total Peak Power: 2300Watts