[Jazz1]

https://wyred4sound.com/products/dac-2v2-series

I've got a good friend that would like to add BT functionality to this DAC. It has no headphone port as expected. I think he feeds this DAC with a cabled streamer. Any thoughts or ideas would be most welcome!

 

[tesarpa]

Well, I think you ask for something very complicated and impractical. Your chain would look like this, if I get it right:
Streamer (digital) -> DAC (signal converted to analog) -> BT transmitter (signal converted to digital and compressed for BT) -> BT headphones (BT audio converted to analog). I see no point to keep DAC in the chain for this purpose. More logical is to connect Streamer (digital) -> BT transmitter (digital audio compressed for BT) -> BT heaphones. There you have only one necessary DA conversion.

Such transmitter is for example FiiO BTA30, see https://www.fiio.com/bta30pro. BTW, it can also receive BT and become source for external DAC.