I Made my own Audio Bluetooth module - Hackster.io
DC 5V Bluetooth Audio Module Bluetooth Receiver Universal Audio Bluetooth Module
GitHub - christian-kramer/JieLi-AC690X-Familiarization: Adventures in figuring out how this incredibly ubiquitous, yet incredibly mysterious integrated circuit works.
JL-AC6905A bluetooth MP3 decoder single chip ic integrated circuit - AliExpress
integrated circuit - Indentifying a JL chip in a Bluetooth - Electrical Engineering Stack Exchange
MAX202CSE - MAXIM - 10pcs lot - Dual Transmitter/Receiver RS-232 16-Pin SOIC N | eBay
New Original10pcs/lot Jieli Chip Bluetooth Ic Ac6951c Lqfp48 32bit Dsp Ble 5.1 Bt Speaker Tws Integrated Circuit Chipset - Integrated Circuits - AliExpress
TPM 2.0 Encryption Security Module,14pin High Security Wide Applicability Encryption Security Module for Computer,Supports for Windows 7 64 bit : Amazon.co.uk: Computers & Accessories
Bluetooth Transmitter – Chipset, Power, Datasheet | Hackaday.io