Features Class D Technology Bluetooth Receiver Built in 10 channel DSP 2-Ch Assignable Pre-amp outputs Easy connect speaker harness Speaker-level inputs (6 channels) for OEM integration Large Gauge Power Wire Inputs PWM Mosfet Regulated Power Supply APC - Audio Protection Circuit SESI - Signal Evaluation Status indicator CHM - Collective Heat Management Specifications Rated @ 14.4 volts Rated Power: 4 x 65 Watts @ 4Ω -Ch 1-2, Ch 3-4 Rated Power: 4 x 125 Watts @ 2Ω -Ch 1-2, Ch 3-4 Rated Power: 2