Very good mono (can not be used as stereo) amplifier. Used very low as MBL111RC center speakers amplifier. Now I am going only to stereo, so a good amplifier is for sale. Will be sent via insured Currier service for free of charge in EU. Never had problems with amplifier, never been repaired. If needed inside photos, let me know and I do them. Specifications:Power output: 210W per channel into 8 ohms, 310W per channel into 4 ohms, 380W per channel into 2 ohmsAmplified channels: 2Frequency response: – 130kHzInput impedance: Signal to noise ratio: 118dB, Balanced: 20 kohms, Unbalanced: 5 kohmsInput sensitivity: for 310W into: into 4 ohms : 2VDamping factor: over 200 at 4ohmsInputs: Unbalanced (RCA): 2, Balanced (XLR): 2Speaker connector type: Binding post terminalsPower adapter voltage: 115 V – 230 V, 50 Hz, 60 HzDimensions (WxHxD): 18 in x 7.7 in x 15 inWeight: 67 lb