SMC SMCAMP-1000G Ethernet Amplifier. Audio output channels: 7.1, Distortion and noise (1kHz): 18 dB. Connectivity technology: Wired. Weight: 2721 g. Operating temperature range (T-T): -40 - 70 °C. Frequency band: 2.400 x 2.500 GHz, Dimensions (WxDxH): 279 x 25 x 57 mm