JBL, High-Performance 5 Channel Car AmplifierSpecifications: 5 channel car amplifier: Yes 50 watts RMS x 4 + 320 watts RMS x 1 at 4 ohms: Yes 65 watts RMS x 4 + 500 watts RMS x 1 at 2 ohms: Yes 140 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 at 2 ohms: Yes variable high and low pass filters (32 320 Hz, 12 dB octave) on front and rear channels: Yes low pass filter (32 320 Hz, 12 dB octave) on subwoofer channel: Yes bass boost on subwoofer channel (0 12dB at 45Hz): Yes phase switch on