Brand Mousai Model MS-A1 Colors Black + Silver Quantity 1 Type Mini Material Aluminum alloy Total Power 25W x 2 Channels 2 Power Supply 14V Plug Type 2-Flat-pin Plug Interface R/L(AUDIO INPUT) R OYT / L OUT(+ -) / power port Other Features Power: 25W 4ohm 13.5W 8ohm; Efficiency: 81%@25W4ohm / 88%@13.5W8ohm; dynamic range: 100dB; Signal input: RCA; Signal output: 4-wire; Power supply: 14.V 4A ; The MS-A1 based on the United States TRIPATH company amplification chip TA2021B as the corealso used EPCOS ELNA PanasonicEVOXVISHAY chips and resistors and capacitorsto ensure the most realistic sound reduction and distortion; Power indicator light installed in the knob inside the boot that is light.Protection and start the lights installed in the power switch below.Protection circuit does not start the machine or drive this indicator does not light up Packing List 1 x Digital Amplifier 1 x 100~240V power adapter (110cm cable) 1 x US plug power cable (147cm)