ESX Xenium X-FOUR. Audio output channels: 4.0, Total Harmonic Distortion (THD): 0.07 %, Signal-to-Noise Ratio (SNR): 84 dB. Connectivity technology: Wired. Dimensions (WxDxH): 200 x 260 x 51 mm, Output power: 4 x 75/125W, Remote control type: BR