Aurender A1000 all in one streamer/dac - best for tube amps as it is single ended design. It sounds better than all those separates combined (and yes I have owned them and compared them). Denafrips takes a hit on the single ended output as it is half ladder and no buffered output. Go Cyan 2 if you must do R-2R. Qutest is sterile sounding once you actually compare it to better gear.
For my balanced system I have Lumin U2 dedicated USB Audio out to LTA Aero DAC into Woo Audio WA33 balanced with Focal Utopia. Excellent.

