Quad headphones?

[flummox]

I have a couple of Quad files of albums that I can open up in Audacity or Pro Tools on my Mac. This allows me to listen to each track individually. Don't really want to tear up my existing system (although I have enough speakers) to implement Quad. Researched old Quad headphones, generally not well reviewed (but maybe better than nothing). Wondering if there was a way to play back Quad files on my Mac, possibly with an additional piece of hardware in between the Mac and Quad headphones.

 

[François]

I think you’ll need a 5.1 USB sound card and then a quad headphone amp…