Channel Impedance: 2 Ohm Amplifier Class: D Brand: Stetsom Frequency Response (Hz): 10Hz - 48000Hz Number of Channels: 4 Channel RMS Power: 280 Power with double the impedance (watts rms): 140 Maximum Supply Voltage (VDC): 16 Minimum Supply Voltage (VDC): 9 Idle Consumption (A): Musical Maximum Consumption (A): 11.5 Sinusoidal Signal Maximum Consumption (A): 23 THD (Total Harmonic Distortion): 0.03% Signal Noise Ratio (dB): 90 Protection System: Output Short Circuit,Superheating,High Voltage