Alpine PMX-T320. Signal-to-Noise Ratio (SNR): 90 dB, Frequency response: 10 - 50000 Hz, RMS rated power: 150 W. Weight: 2000 g. Power requirements: 14.4V DC (11V - 16V), Dimensions (WxDxH): 210 x 242 x 60 mm, Output power: 320 W