TDA8954 is a high-power class D audio digital core chip, which has the advantages of small size, high efficiency, and strong power output. The maximum output power can reach 210W+210W under 4 ohm load he applicable voltage is also very wide, and it can work at DC plus or minus 12.5-40V; when the power supply is plus or minus 40V, the power can reach a high power output of 210W+210W 4 ohms The power amplifier board can also be designed to bridge the BTL mono output, the power is to 420W The designed and perfect protection circuit makes the power amplifier board switch on and off, and can well protect supporting equipment. Specification Output power: up to 210W+210W 4-8 ohms Frequency response: 20H-20KZH Colour:blue+black Material:PCB Package Contents: 1 * Power Amplifier Board Only the above package content, other products are not included. Note: Light 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.