Point of diminishing return for a DAC

Get the MacMini out of the picture by buying something relatively cheap like the following.

https://www.audiogon.com/listings/lis9j9ee-sonore-ultrarendu-network-streamer-ifi-ipower-power-supply-roon-ready-21642-music-servers-docks

It is ROON READY. It is an Ethernet-2-USB converter. Some call it a Digital-2-Digital converter. I use the lower model, the microRendu, and it isolates the computer from my DAC. A used microRendu can be had for $400-$500.  

Computer Audiophile just named the Rendu products as the digital product of the decade. 

$2k for the Matrix XSabre Pro MQA DAC. Best measured performance on Audio Science Review out of 150 tested dacs.

Get an Audio-gd R8 DAC (ladder DAC) and a ultrarendu streamer/bridge and you will be MANY steps above now and VERY close to a multi thousand dollars DACs. 

Again, my thanks for all the responses!!

i was lucky enough to find a great dealer (Basil Audio) that gave me a stack of Players to audition on my system in my house. I tried them all and while each had a great sound there was one that worked best for me. I blind tested them all again for my wife and she picked the same player I did. These were not low end players but each sounded different. I went with the Linn Akurate with Katalyst  and could not be happier. Take the time and find what is right for you and your equipment and room.