Fangrui Product Details Esp32-audio-kit Is A Small Audio Development Board Developed By Anxinke Based On The Esp32-a1s Module. Most Of The Audio Peripherals Are Distributed On Both Sides Of The Development Board. It Supports Tf Card, Headphone Output, Two-way Microphone Input And Two-way Speaker Output, Which Is Convenient For Developers To Quickly Develop Esp32-audio-kit Supports Music Player Or Recorder, And Supports Audio Formats, Such As Mp3, Aac, Flac, Wav Ogg, Opus, Amr, Ts, Eo, Downmixer.sonic, Alc, Etc. Esp32-a1s Adopts Smd Packaging To Realize Rapid Production Of Products And Provide Customers With High-reliability Connection Methods. Esp32-audio-kit Can Play Music From The Following Sources: Http, Hls (http Live Streaming), Spiffs, Sdcard, A2dp Source, A2dp Sink, Hfp, Etc. Integrated Media Services, Such As: Dlna, Volp And Other Internet Radio, Also Supports Online And Offline Voice Recognition And Integration With Alexa, Dueros And Other Online Services. The Module Has Built-in Advanced Low-power Dual-core 32-bit Cpu