Mac Audio ZX 2000. Audio output channels: 2.0, Total Harmonic Distortion (THD): 0.05 %, Signal-to-Noise Ratio (SNR): 100 dB. Connectivity technology: Wired. Weight: 3000 g. Power requirements: 12 V DC, Output power (DIN): 4 Ω - 2x100/1x280 W; 2 Ω - 2x140 W, Dimensions (WxDxH): 252 x 55 x 290 mm