For a single-unit network streaming DAC, I'd recommend looking at the Bryston BDA-3.14 and Lumin units. Which direction between the two would be a question of which sound character best matches your preference.
I also really like Devialet Expert Pro units but those are best used as all-in-one directly connected to your speakers, which doesn't exactly match what you're looking for.
I also really like Devialet Expert Pro units but those are best used as all-in-one directly connected to your speakers, which doesn't exactly match what you're looking for.