Autotek Super Sport AT Series AT1500 1500 Maxx Watt Power A/B Class Two-Channel Amplifier 2 x 375 W @ 4 Ohms, 2 x 750 W @ 2 Ohms, 1 x 1500 W @ 4 Ohms Maxx Power Preamp level RCA inputs, high level inputs and daisy-chain line outputs Mono/stereo switch High-pass/low-pass/full-pass frequency selections Diagnostic LED power protection system warns and detects