Make the old speaker device work like a Bluetooth device. The transmitter mode is suitable for: TV/computer/projector/amplifier/TV box/Bluetooth earphones/headphones/Bluetooth speakers, etc. DAC converter, supporting signal conversion from digital optical coaxial audio to RCA 3.5mm or R/Analog audio.
eBay
Upgraded Bluetooth 5.3 Audio Transmitter Receiver RCA 3.5mm AUX Jack USB Dongle Music Wireless Adapter For Car PC TV Headphones
Aliexpress UK
I2.42c8eV3reV3rwF" style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; height: 17236px; position: absolute; top: 0px; visibility: hidden; width: 1044.75px; z-index: -1;">.
eBay
Bluetooth 5.4 Receiver Transmitter Low Latency 3.5mm AUX Jack Wireless Audio Adapter For TV Airplane Car Speaker PC Headphones
Aliexpress UK
New Car Bottle Opener Cup Divider Holder Kit For VW GOLF JEETA MK5 MK6 GTI R3. RCA Male Plug to Bare Wire Cable For CD DVD Player Tuner Amplifier Audio Speaker. Bluetooth receiving (RX) and Bluetooth transmitting (TX) two-in-one design.
eBay
aptX Bluetooth Audio Transmitter Receiver 3.5MM AUX aptX-Adaptive AD/HD/LL AAC HiFi Multipoint Wireless Adapter For TV PC Car
Aliexpress UK
Decoding: Transmit Mode - SBC/aptX/aptX LL/aptX HD, Receive Mode - SBC/AAC/aptX/aptX LL/aptX HD. Transmitter mode(TX): Make your TV bluetooth enabled and stream audio to your bluetooth headphones or speakers.
eBay
Bluetooth Receiver Transmitter Remote Control Stereo Music 3.5mm AUX Jack RCA TF Card Wireless Audio Adapter for Car Kit TV PC
Aliexpress UK
By pressing the button on the center front, the receiver & transmitter device will start to pair to the next Bluetooth device. ●2-in-1 design, by using this wireless adapter, you can send and receive all of the audio freely and easily.
eBay
B6 2 IN 1 Bluetooth 5.3 Audio Transmitter Receiver 3.5mm AUX Jack RCA USB Dongle Music Wireless Adapter For Car PC TV Headphone
Aliexpress UK
The Bluetooth adapter uses the updated wireless technology to adapt audio systems with Bluetooth capability. 1 set Bluetooth Audio Transmitter. It allows audio systems such as TV or radio etc. to connect wirelessly via Bluetooth 5.0.
eBay
NFC Bluetooth 6.0 Receiver Transmitter FM Stereo AUX 3.5mm Jack RCA Optical Handsfree Wireless Audio Adapter For TV Car Speaker
Aliexpress UK
Turn on the Bluetooth earphones or Bluetooth speakers and make sure they are in Bluetooth pairing mode. Wait for the adapter to automatically pair with Bluetooth headphones or Bluetooth speakers. Then, you can play music on your computer or TV, and the sound will be transmitted to Bluetooth headphones or Bluetooth speakers.
eBay
Bluetooth 5.4 Receiver Transmitter LCD Display Wireless Audio Adapter Support AUX/COAXIAL/Optical/TF/U-disk For TV PC Speaker
Aliexpress UK
Bluetooth Transmitter and Receiver 2-IN-1: This aux Bluetooth adapter supports RX receiving mode, TX transmitting mode, TF card transmitting mode and TF card playing mode (TF card is not included).
eBay
2 In 1 Bluetooth 5.0 Audio Receiver Transmitter 3.5mm AUX USB Stereo Music Wireless Adapter With Mic For Car Kit Speaker TV PC
Aliexpress UK