FEATURES: High Efficiency Class D Design Full Range and Mono Block configurations Soft Delay Remote Turn On/Off Circuit Eliminates Pops and Clicks Variable high / Low Pass Electronic Crossover Self Diagnostic Protection Circuit with LED Status Indicator for Impedance Over-load, Speaker Short Circuit, Thermal Overheating, and DC Output. Conformal Coated PCB for Dust, and Water Spray Protection Variable Gain Control RMS/Max Power: 600/1200 Watts | Powerbass | | PBM-600.4 | 75Watt x 4 (4 ohm), 150Watt x 4 (2 ohm) Mini Amplifier | Black/Gray | Best Buy