I appreciate all the suggestions, very interesting, I look at their manuals and reviews - Bifrost 2-64, exaSound, Hidizs DAP.
@soix asked about budget. Maybe max 1200 USD. Depends on the sound quality. The Topping e30ii is an over-achiever at its low price level, especially when playing direct DSD with the pc volume disabled. Yet there is a huge gap to Teac NT-505 in my main system. The Teac sounds better in most ways. I want a new DAC to sound clearly better than the one I have, with the Teac NT-505 as my reference level. Up there, or above.