Best digital source for USB dac under 2000 used?

Hi there,

looking for advice on a digital source for my 47 Labs Shigaraki USB dac, into my 47 Labs Gaincard amp. Budget around 2000 euro including second hand.

So, I don’t need an unit with an integrated dac, but that said, many options do have one on board. I’m looking at for example the Innuos Zen Mini mk3 with LPSU, or the Aurender A100.

Interested in a good interplay with my DAC. Not looking for the highest resolution or widest soundstage, but more into accurate tonality.

Any other recommendations? Thanks!