I agree, maybe the DAC 2 card is the way to go. My Dad has a Mc MA8950 and it sounds great with his streamer and the Amp's DAC 2 card .
I am a big fan of separates but if the built in DAC is well implemented it can sound really good.
I have a Cyrus i7XR Integrated Amp with a built-in DAC, in fact it's the same chipset used in the McIntosh DAC. I fully intended to use my RME DAC but the Cyrus sound so good with it's DAC I sold the RME.
My main system uses an Aurender N200 with the LAB 12 DAC 1 Reference and it is an excellent sounding combo.
It is nice to have that eArc inputon the Mac if you watch a lot of TV to it