1 Channel MonoBlock Digital Amplifier. 1500W x 1CH @ 1O/ 1000W x 1CH @ 2O / 600W x 1CH @ 4O RMS Power Output. Input Sensitivity: 0.2-10 Volt. Crossover Filter : 50-250Hz (LPF), 24dB Per Octave Slope. Frequency Response: 20-500Hz. Signal to Noise Ratio: > 90dB. Overall Operation Efficiency: >85%. Selectable REM / VOX / DC Turn On Modes. Variable Phase Adjustment. Remote Bass Knob Included.