Specification: Model:G Series 500W RMS FULL MOSFET ANPLIFIER 1.Continuous Power Rating Measured at 12V 4 OHM 1%THD+N 280W 2 OHM 1%THD+N 400W Measured at 14V 4 OHM 1%THD+N 350W 2 OHM 1%THD+N 500W 2.Fuse Rating 40A*2 3.Frequeency Response(-3dB)10Hz-350Hz 4.Variable Crossover Frequency 40Hz-350Hz 5.Crossover Slope -12dB/-24dB 6.Input Low Voltage Rang 100mV-3v Input Hi Voltage Rang 250mV- Also We have the following model for this series: 300W RMS * 1 Channel 80W RMS * 4 Channel 80W RMS * 2 Channel