Audiobahn A4002J 500W 2-Channel Intake Series Car Amplifier 2-Channel Class AB Intake Series Car Amplifier RMS Power Rating: 4 ohms: 125 watts x 2 chan. 2 hms: 250 watts x 2 chan. Bridged @ 4 Ohms: 500 watts x 1 chan. PWM MOSFET power supply Large display volt meter with blue illumination Bass Boost on/off switch