ONKYO TX-8555. Total Harmonic Distortion (THD): 0.08 %, Impedance: 4 Ом, Frequency response: 10 - 100000 Hz. Connectivity technology: Wired. Supported radio bands: FM/AM, AM band range: 522 - 1611 kHz, FM band range: 87.5 - 108 MHz. Weight: 7.5 kg. Power requirements: AC 230-240 V, 50 Hz, Dimensions (WxDxH): 435 x 149 x 340 mm, Output power: 180 W