Any recommendations please? bluetooth tx /rx w/ 3.5mm headphone jack

[Mr Gus]

Just bought a couple of optoma led projectors, both of which need a bluetooth external boost to audio.
Am looki g for a couple of low lag cheap but capable usb powered if anyone has a personal recommendation of none crumbling units without being poncey prices, ..they are from £2 up on ali express nearer £10+ on amazon.

Millions out there, just to addle my brain.
Thus the ask.



Picked up an optoma ml750e & an ml300 to keep wattage down, but am tempted to go for a 4k unit when I see an opportunity.
One is 700 lumens ..effectively x2 that in ansi, the other is 300 lumens output.bothare surprisingly capable & watchable without busting the bank as micro projectors.