SAE-1000D - Sundown Audio Monoblock 1000W RMS Digital Class D Amplifier Input Sensitivity: 6 - 0.2 Volts RMS Power 2-Ohms Linked: 2000W RMS Power 1-Ohm Mono: 1000W RMS Power 2-Ohm Mono: 500W RMS Power 4-Ohm Mono: 250W