Here's a great review of the Holo May DAC. One bit that got my attention was this:
https://twitteringmachines.com/review-holo-audio-kte-may-dac/
All the best,
Nonoise
It’s worth noting that John Atkinson of Stereophile, among others, have measured the TKE May DAC finding unparalleled performance, This implies a resolution of more than 22 bits, which is the highest I have encountered.
https://twitteringmachines.com/review-holo-audio-kte-may-dac/
All the best,
Nonoise