Another +1 for Holo Audio DAC’s. I have a Pro-Ject S2 Ultra and Spring 3 (did not elect the pre-amp option since I wanted their Pre, Serene, both are KTE editions). The Spring 3 uses the same components as the May in NOS mode but is missing the chip and all the features they bring.
It is a marvelous R2R DAC that reminds me of listening to tape, that was my immediate impression anyway. It is that analog sound everyone talks about and never fatiguing. The Serene Pre-Amp was added four months later and has given me all I was looking for in my digital journey.