Power supply voltage/current: DC voltage 33V-50V, current 3A or above (charger may not function properly, please use a power adapter or switch power supply) Rigorous design, fever grade materials, and exquisite production Integrated ultra-low distortion front stage:Using a single power supply architecture for more convenient use Ultra amplifier chip:Quick response low noise power supply design, rigorous amplifier board design, luxurious materials used Power amplifier type: D-class fever digital power amplifier board Power amplifier chip model: for 's latest MA5332MS high-definition D-class power amplifier IC SNR: 96dB Distortion:Less than 0.01% +N 1KHz 1W 4Q Gain: 33dB Supporting speaker impedance: 2-8ohm (4ohm-6ohm optimal) Output power: Maximum output power 200w Number of channels: Mono channel Color: As Shown Material: PCB Package Contents: 1 x Amplifier Board(balanced input) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.