Adopt ES7210 high-performance four-channel encoding chip, which can communicate through I2S interfaceUsing ES8156 high-performance stereo audio decoding chip, can communicate through I2S interfaceFour high- MEMS silicon microphones onboard, can record four-channel recording simultaneously with better sound Onboard standard 3.5mm headphone , can play music through external headphonesSupport stereo, 3D surround and other audio outputType: Audio Driver BoardAudio encoding chip: ES7210Audio decoding chip: ES8156Control interface: I2CAudio interface: I2S : 102dBDAC : 110dBSupply voltage: 3.3VProduct size: 65x56mmMaterial: PCBcolor: BlackPackage Contents:1 x Audio Driver BoardOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.