JVC KS-AX201 500W Max AX2 Series Class AB Monoblock Amplifier RMS Power Rating: 4 ohms: 150 watts x 1 chan. / 2 ohms: 250 watts x 1 chan. Max power output: 500 watts 3-way protection circuitry (thermal, overload, and speaker short protection) Speaker-level (high-level) inputs Power On Indicator (GREEN)/Protector Indicator (OFF)