Can an ESP32 be fed an audio signal and then output that audio to a Bluetooth speaker? - Electrical Engineering Stack Exchange
10] DIY DSP Bluetooth Speaker with ESP32 - YouTube
Stream Your Audio on the ESP32 - Hackster.io
Amazon.com: JESSINIE ESP32 Aduio Kit ESP32 WiFi Bluetooth Module ESP32-A1S Module Audio Development Board BLE Low Power Dual-core 64Mb Serial Adapter Port to WiFi Board : Electronics