DC 3.6V-30V Stereo Smart Car Bluetooth 4.0 EDR Audio Receiver Module 3.5MM Headphone Jack Input and Output 12V 24V for Arduino - AliExpress Electronic Components & Supplies
TSA6015 - Bluetooth Audio Receiver with Microphone Input (Phone call)
I Made my own Audio Bluetooth module - Hackster.io
Bluetooth Audio Receiver and Playback Module - DFRobot
Amazon.com: MakerHawk 2pcs Bluetooth Audio Receiver Board BT 5.0 Stereo Audio Amplifier 3.7-5V Car Speaker Amplifier for DIY : Electronics
$15.99 - Bluetooth Audio Transmitter & Receiver Module - Tinkersphere
Bluetooth Audio Receiver Module - 5V - for DIY Wireless Speaker | Arduino, DIY \ Communication \ Bluetooth
UCTRONICS Bluetooth 5.0 Mini Audio Receiver Board, Portable HiFi Stereo Music Pre Amplifier for Headphone, Car
GitHub - pschatzmann/ESP32-A2DP: A Simple ESP32 Bluetooth A2DP Library (to implement a Music Receiver or Sender) that supports Arduino, PlatformIO and Espressif IDF