["brand new and high quality\nFeature:\nThe lower distortion, better control and resolution.\nSingle differential input, single-ended voltage amplifier stage, three-stage inverted darlington output.\nThe output stage uses the original KTB817, KTD1047.\nfor KEC transistor, EVOX producing CBB capacitor. KEMET, TDK monolithic capacitors.\n\nSpecifications:\nName: Amplifier Board\nSupply Voltage : for DC + -15V to + - 45V dual AC 12V- dual 32V \nOutput Power: 15-100W 8ohm (+ - 42V)\nVoltage Gain : 34times\nInput Sensitivity: 1.2V100W 8 ohm\nSNR: More than 98DB\nDistortion: <0.009 THD 1K HZ 10W\nOutput Stage quiescent current per channel Approximately 30MA \nMaterial: Metal\nDimension: approx.7.5x6.3cm/2.95x2.48in\nColor: As pictures shown\nQuantity: 2 Pcs\n\nNote:\nNo retail package.\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Includes:\n2 x Amplifier Board (other accessories demo in the picture is not included)"]