SAE-600D - Sundown Audio Monoblock 600W RMS Digital Class D Amplifier Input Sensitivity: 6 - 0.2 Volts RMS Power 2-Ohms Linked: 1000W RMS Power 1-Ohm Mono: 600W RMS Power 2-Ohm Mono: 300W RMS Power 4-Ohm Mono: 150W