1 x 3.5mm AUX Audio Cassette Tape Adapter. Put the converter into the tape player like a tape, press the play button, and insert the plug of the converter into the headphone jack of the player. Type: Cassette Adapter.
eBay
BS-55 100W TV Sound Bar Wireless Bluetooth Speakers Portable HomeTheater Surround Boombox FM Radio Supports USB,Coaxial,AUX-IN
Aliexpress UK
Audio cassette shaped adaptor for connecting portable audio players to car cassette players. Suitable for portable MP3, CD and MD players. Connect your CD Player / MiniDisk Player / iPod to your car stereo through your car's in-dash cassette player.
eBay
Classic Bluetooth Speaker Pontiac Car Shaped Audio TF Card USB Drive FM Radio AUX Handsfree Call TWS Function Wireless Sound Box
Aliexpress UK
3.5mm Car AUX Audio Cassette Type Adapter For CD Player Phone to Car. Adjustable cable positioning for cassette players with different insert direction, even for horizontal insertion. 1 x 3.5mm AUX Audio Cassette Tape Adapter.
eBay
ESSGOO Single 1 DIN Car Stereo Wireless Apple Carplay Android Auto 5" HD ISP Touch Screen Bluetooth USB AUX-IN TF FM Mirror Link
Aliexpress UK
Adjustable cable positioning for cassette players with different insert direction, even for horizontal insertion. 1 x 3.5mm AUX Audio Cassette Tape Adapter. Put the converter into the tape player like a tape, press the play button, and insert the plug of the converter into the headphone jack of the player.
eBay
Ortizan 40W Portable Speakers Bluetooth 5.3 Bass Subwoofer Wireless IPX7 Waterproof TWS Outdoor Travel Speakers Suporrt TF/AUX
Aliexpress UK
Classic Music Design: 24K gold plated connector, sterling silver core and durable shell make this 3.5mm cassette adapter the best choice. Item Type: Cassette Tape Adapter. 1 x Cassette Tape Adapter. High Quality: 4 channel output, the insulating layer on the of the magnetic head can eliminate the interference noise of the speaker when playing music.
eBay
ESSGOO 10.1 Inch Rotatable IPS Touch Screen Single DIN Car Stereo Head Unit Wireless Carplay Android Auto Radio USB AUX TF
Aliexpress UK
You don't need to replace or refit your car to avoid destroying his original classic. Compatible: The car cassette aux adapter supports any phones, tablets, MP3 players, car stereo, headphones, HiFi, portable speaker or other devices equipped with standard 3.5mm jack or AUX in port.
eBay
2.8 Inch Color Screen DAB/DAB+ Digital Broadcast Receiver For European Cars Video Display FM Transmitter MP3 Digital AUX
Aliexpress UK
Play any portable CD or MP3 player through any audio cassette player. 1 x Car Audio Tape Cassette with 3.5 mm Connector. Cassette Adapter. Plug: 3.5mm.
eBay
Ohayo X3 Portable Bluetooth Speaker 40W,IPX7 Waterproof Wireless Speaker with Colorful Lights TF Card/AUX in, For Camping Hiking
Aliexpress UK
3.5mm Car AUX Audio Cassette Type Adapter For CD Player Phone to Car. 1 x 3.5mm AUX Audio Cassette Tape Adapter. Put the converter into the tape player like a tape, press the play button, and insert the plug of the converter into the headphone jack of the player.
eBay
2.4 Inch LCD Color Screen Radio Receiver for Car Stereo Bluetooth-compatible 5.0 Dab Digital Hands-free MP3 AUX FM Transmitter
Aliexpress UK