SPL GLA1.3400D 3400 Watt Peak 1-Channel Class D Amplifier 1 ch. Class D for max power efficiency. Peak Power = 3400Watts into 1 Ohm, RMS Power into 4 = 1000, RMS Power into 2 = 1400, RMS power into 1 = 1800 Variable 45Hz 12dB Bass Boost, Remote Mount Gain Control Include MOSFET PWM Power Supply, Three-Way Protection Circuitry Total Harmonic Distortion: 0.05%, Frequency Response: 15-250kHz, Signal-to-Noise Ratio: 100dB, Input Sensitivity: 250mV-6V Variable 12dB 40-150Hz Low Pass Filter, Variable 12dB 20-50Hz Subsonic Filter, Variable 45Hz 12dB Bass Boost, 180 Phase Switch, Strapable for Double Power w/ 2 ohm, Pre-Amp Low-Level Outputs.