Question about Soundmaster Nr545dab

The device only has a Bluetooth receiver, but you can connect it to an amplifier using a cinch cable.
Value Stereo Jack - 2x Cinch (1.50m, Entry, Black)


But there is another possibility, you can put this small device in between and it should be able to connect.
I'm not 100% sure if this works with headphones only or also with speakers.
Avantree Priva II - Multipoint Bluetooth Audio Transmitter

The quality of the music is good, but it is really a vintage sound rather narrow and little bass.