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, , , , , 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 From The Following Sources: Http, (Http Live Streaming), Spiffs, Sdcard, A2dp Source, A2dp Sink, Hfp, Etc. Integrated Media , Such As: Dlna, Volp And Other Internet Radio, Also Supports Online And Offline Voice Recognition And Integration With Alexa, Dueros And Other Online . The Module Has Built-In Advanced Low-Power Dual-Core 32-Bit Cpu And Es8388 Audio Codec Chip, Which Integrates 2-Way Adc And 2-Way Dac, Microphone Amplifier, Headphone Amplifier, Etc., Can Be Widely Used In Various Home Smart Devices, Smart Audio, Story Machine Solutions, Etc. It Is An perfect Solution For Voice Products ESP32 Serial Port To Wifi Aduio-Kit Audio Development Board Description: 1. Development Board Model: ESP32-Audio-Kit_V2.2 2. Size: About 82 x 73mm 3. Antenna Type: Onboard PCB Antenna 4. Spectrum Range: 2400~2483.5MHz 5. Working Temperature: -40C-85C 6. Storage Environment: -40C-125C, Less than 90%RH 7. Power Supply Range: Supply Voltage 4.7V~5.3V, Supply Current 1A 8. Support Interface: UART/GPIO/ADC/PWM/12C 9. 10 Port Quantity: 10 10. Serial Port Speed: Support 110~4608000 , Default 115200 11. Bluetooth:Bluetooth 4.2 Br/ And Standard 12. Security: /WPA-/WPA2- 13. Spi Flash: Built-In 4mbyte 14. Audio Input And Output: Linein Stereo Input Channel; Hpout Stereo Mixer-Channel Amplified Headphone Output; Lout/Rout 3W Power Amplifier Audio Output 15. Material: PCB 16. Color: Black Package Contents: 1 x 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.