The ESP32-A1S from PMD Way is an ultra-small, powerful volume multifunction audio module, the main chip uses a low-power dual-core 32-bit CPU, the main frequency can up to 240MHZ, and the operating capability up to 600 DMIPS. It has a built-in Codec AC101 audio decoding chip, supports for local music playback. The ESP32-A1S module supports a variety of peripherals, you can easily access Amazon or Baidu voice recognition services, it supports varieties of mainstream compression and lossless audio formats, including M4A, AAC, FLAC, OGG, OPUS, MP3,etc. Click here for the neat ESP32-A1S development board. Features: Supports two MIC inputs and Linein mode inputs. Supports two MIC inputs and Linein mode inputs. Supports on-board Antenna or IPEX block support. Supports firmware upgraded (FOTA). Built-in 520KB SRAM+ 8M PSRAM, default 32Mbit SPI Flash. Support UART/SPI/I2C/I2S/PWM/ADC/DAC interfaces. Wiki & External links User Guide ESP32 AT Firmware
