Amazon.com: AITRIP 4 pcs M28 Wireless Bluetooth MP3 Audio Receiver Board BLT 4.2 mp3 Lossless decoder Bluetooth 4.2 Audio Receiver Board Wireless Stereo Sound Module Compatible with Arduino Raspberry Pi : Electronics
Bluetooth Audio Receiver (Raspberry Pi Version) : 9 Steps - Instructables
Discontinued] UCTRONICS Bluetooth 5.0 Mini Audio Receiver Board, Portable Wireless HiFi Stereo Music Transmitter for Headphone, Car Amplifier, Home Sound System, DIY Speaker
Raspberry Pi as wireless audio receiver - DEV Community
Use Raspberry Pi as a Bluetooth & AirPlay receiver
Turn your old speakers or Hi-Fi into Bluetooth, Airplay and Spotify receivers with a Raspberry Pi and this step-by-step guide
Pluga-Project - Raspberry Pi Bluetooth Audio Receiver - Plugable Knowledge Base