Check the listing for details. ESP32-Audio-Kit ESP32-A1S ESP32 Audio Development Board WiFi BLE Module. Condition: New. Listed at 23.68 USD. ESP32-Audio-Kit ESP32-A1S ESP32 Audio Development Board WiFi BLE Module - Descriptions: ESP32-Audio-Kit is a small audio development board based on ESP32-A1S module. Most audio peripherals are distributed on both sides of the development board, supporting TF card, headphone output, two microphone inputs and two speaker outputs. It is convenient for developers to develop quickly. Suitable for home smart devices, smart speaker solutions, children's story machine prototypes, etc., is an ideal solution for IoT applications. Low-power dual-core 32-bit CPU for application processorsMain frequency up to 240MHz, computing power up to 600 DMIPSBuilt-in 520 KB SRAM, 8MSupports interfaces such as UART/SPI/I2C/PWMHeadphone port: Insert 3.5mm headphone jack to support left and right channel outputLeft and right channel speakers: support output 4Ω 3W speaker output, and support dual channel outputTwo analog microphones, respectively, as audio input; support for headset microphone inputSupport 3.7V lithium battery input; support 5V 2A power input, support simultaneous lithium battery chargingSupport 64G SD card reading and writingSupport multiple sleep modesEmbedded Lwip and FreeRTOSSupport STA/AP/STA+AP working modeSupport Smart Config/AirKiss One-click distribution network - Package Contains: 1pc x ESP32-Audio-Kit Audio Development Board - Pictures: