1. Using high-quality amplifier chip, model: TDA7294 2. Products using high-quality materials, long service life 3. The product is a loose part, you need to assemble it yourself, very suitable for DIY enthusiasts 4. This is a high-fidelity dual-channel amplifier board 5. 200W power products are very stable performance Audio signal input: dual-channel audio signal input. Audio output: dual-channel 100W + 100W audio output. Circuit principle: 2 way TDA7294 amplification output. Working voltage: DC 24-40V Input impedance: 22K OHM Output impedance: 4-8OHM PCB specification: FR4 50X120X1.6MM The color and appearance of some accessories are sent randomly, which will not affect the use Colour:Black Material:Metal + Plastic<br><br>Package Contents: 1 x DIY loose parts / 1 x finished module 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.