1. High efficiency output, Supports 100W stereo or 200W mono output to meet various audio needs. Under a 4 load, the stereo output power can reach up to 2x105W; Under a 2 load, the output power of a single channel can reach 1x208W. 2. Ultra low distortion and high sound quality, Adopting a closed-loop feedback design, the audio bandwidth reaches up to 100kHz, ensuring low distortion and excellent sound quality, The total harmonic distortion plus noise (+N) is as low as 0.02%, and the signal-to-noise ratio (SNR) exceeds 108dB. 3. Flexible working mode, Supports AD mode and low altitude idle current HEAD mode to achieve efficient operation, Standby power consumption is less than 0.1W, idle power consumption is less than 0.25W, energy-saving and environmentally friendly. 4. Multiple protection functions, Built in undervoltage protection, overvoltage protection, short circuit protection, overheating protection, etc., ensuring the safety and reliability of the equipment. 5. Wide range of application scenarios, Suitable for wireless speakers, soundbars, subwoofers, bookshelf audio systems, as well as professional audio and public address systems. Power amplifier type: Class D digital power amplifier Core chip: TPA3221D2DDVR (TI high-level) Output power: 2 x 100W (4 , 24V power supply) Signal to Noise Ratio: (SNR) 108dB Total harmonic distortion+noise: Less than 0.02% (1kHz) Gain: 30dB Support impedance: 4 -8 Power supply voltage range: DC 7-32V (recommended 12-24V) Static current: Less than 30mA (no signal state) External power supply interface: 5V/400mA (backup output) Operational amplifier chip: TL072 (direct insertion, replaceable) Color: Black Material: Plastic+Metal Package Contents: 1 * Digital Power Amplifier 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.