Based on RDK X3 40PIN interface design, using ES7210 high-performance four channel encoding chip, can communicate through 12S interface ES8156 high-performance stereo audio decoding chip is used, which can communicate through a 12S interface Onboard four high-quality MEMS silicon microphones, capable of simultaneously recording four channel audio for better sound quality Onboard standard 3.5mm headphone jack, can play music through external headphones Support stereo, 3D surround sound and other sound effects output Color: Black Material: PCB Package Contents: 1 * Audio driver board 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.