After putting some more thought into my debacle, I came to the decision that I did not want to change my whole rig just to accommodate being able to play MQA from Tidal (I mainly listen to vinyl anyway).
I took another route.
Purchased a HRT Music Streamer II+ , a 5m Audioquest Golden Gate USB & Golden Gate RCA and hooked that up to my iMac. This was my way of solving the distance problem from my the iMac to the CXA80. I tried some 16ft USBs previously to cut out the middleman and go direct, but the sound quality was poor, and I had to have the cable going across my room.
I have been trying out some mirroring apps on my iPad (all free) and while they're a little hard to navigate, the do let me access Tidal Masters from the iMac desktop, all from the comfort of my love seat/listening position.
The HRT DAC doesn't support MQA, but it does support 24/96 which is what the front panel' LED reads when I play Masters (switches back to 48 when playing regular albums on Tidal, and ALAC from iTunes). I also have other 24/96 albums on my hard drive which I can access through the iPad.
I'm sure there were other solutions out there, but for under $350 it didn't hurt the piggy bank too much. No chords and cables going across the room, and didn't have to move any computers or furniture.
Oh, and the sound... Well it's tremendous (lots of positive reviews online for the HRT Music Streamer). Now I don't have to get out of my seat, and my ears are happy. Need to figure out where to relocate the Chromecast though...