AV-2311A Output Power:2 X 45W(8Ω) 2 X 50W(4Ω) Frequency Response: 20Hz-20KHz?dB Input Sensitivity: 250mv SNR: 80dB Distortion: <0.5% Power Voltage: 220~240V/50~60Hz Height X Width X Depth: 150 X 420 X 320 mm Weight：7Kg