DAC suggestions?

If you are using a Roon Nucleus, consider using a Kitsune Holo May as the Dac.  You could eliminate the Mac and go directly into the Dac from the Nucleus.  This will eliminate the computer noise.

Denafrips Venus 15th, brand new $3,495 sold by Audioman58 right here on Agon. With release of the 15th series, the Venus 15th is basically a Terminator 12th from last year.

In that price range, the best DAC I’ve auditioned is the Teac UD-701N - fantastic open sound, lovely build quality and built-in streamer. It also works well with HQPlayer, if you want to go down that route. (It uses the same main board as the $15k Esoteric).

On the source side, I remain very happy with using a Mac Mini as Roon server. I’ve done custom PC builds, and listened to multiple intermediate streamers, but haven’t found anything that makes a significant difference to the sound, in what is a very revealing system.

I have an EverSolo A8. It’s a solid piece of equipment. I e had mine for over a year and it’s been very reliable. The DAC in the A8 is very good, IMO. I listen to similar music as OP and the A8 has been a great digital front end. I use Qobuz and Roon and have  about 2TB of FLAC on my Roon server (Mac Mini). 

I like my Shiit Byfrost. It is 5 years old, and does a great job. It delivers low solid bass, velvet voices, and nice top end. I listen for hours, no fatigue.