Recommendations for a (high quality) DIY DAC ?

[rfbrw]

Any other projects I should look at ?

Not quite so straightforward and certainly not cheap but it is a '4499 based board

 

[wealas]

It's an interesting project indeed.
Unlike others, it seems that the DAC PCB is not disclosed. Moreover, it uses a custom XMOS board which is not disclosed either.
To build it would require designing a PCB for the DAC schematics and testing it with a commercial XMOS board.

I believe he's offered excess boards to other members before so it might be worth asking him.