BOSS Audio CX150 Chaos Exxtreme 200-watts Full Range Class A/B 2 Channel 2-8 Ohm Stable Amplifier Amplifier Class: Class A/B Technology: IC Number of Output Channels: 2 Total Power: 200 Watts Max Power @ 2 Ohms: 100 Watts x 2 RMS Power @ 4 Ohms: 50 Watts x 2 Frequency Response: 12 to 22000 Hz Total Harmonic Distortion (THD) @ RMS Output: 0.05% Signal-to-Noise Ratio (SNR): 90 dB Minimum Speaker Impedance: 2 Ohms Dimensions: 2.17"" x 5.9"" x 9.84"" Soft Turn-On Circuit Thermal Overload & Speaker's Short Protection Power & Protection LEDs Single 2-channel power amplifier Sensitivity: 90 dB Power output: 50w x 2 RMS, 100w x 2 Max Line and speaker level inputs Variable gain controls