4-ZONE 240-WATT Stereo Amplifier 4 channels: 60 watts per channel 240 watts total power Frequency response: 20Hz-20kHz Total harmonic distortion: 0.05% (1kHz); 0.1% (20Hz-20kHz) 16 11/16" W x 3 15/16" H x 14 3/4" D