Class D IR chipset; Ultra-compact high-density aluminum alloy chassis; DirectFET power MOSFET output; Speaker-level input with auto turn-on; Advanced rollback/thermal protection; BTR(TM) port for optional upgrade to Bluetooth(R) receiver; Extended mounting feet for ease of installation; Dim: 1.4H x 6.61W x 4.02D; 1,000W max; 500W RMS; 200W RMS x 2 @ 4ohm ; 250W x 2 @ 2ohm ;