8 ohm output power of 300 watts, 4 ohm output power of 500 watts; input sensitivity 80db; input sensitivity: 1.2v; total yi wave distortion (1k hz po = 1w): 60 db; frequency response range: 20-20khz, ¡à 0.5db; damping (1k hz 8¦¸):> 400; input impedance: 20k ohms balanced, unbalanced 10k ohms; input connections (each channel): output connections (each channel): four-core speaker side seat, terminal; short circuit protection, limiting, dc, overheating, overload, soft start; input mode, input sensitivity and volume control; dimensions (hwd) 495mm * 425mm * 200mm; weight: 16.5kg 13.3kgs , 500*420*210mm