2 CH Digital Amplifier Power Output : RMS Power 150W×2 @4 Ohms THD: ≤0.05% S/N RATIO: ≥100dB Selectable Crossover: High Pass/ Low Pass/ Full Range Bass Boost Frequency: 45Hz Bass Boost: 0-18dB Thermal, Overload, Short Protection Efficiency:>75% Dimension (L×W×H):280mm×188mm×46mm