I have it installed on a dedicated old MacBook Air, which is tucked away in a closet in my bedroom. There is a USB cable snaking out to a DAC that I use with headphones in bed. Mainly Tidal and ripped SACD DSD files. Otherwise, it broadcasts to my receiver in the living room through the LAN and my Panasonic UB820 UHD player (which has a decent AKM DAC) in the HT room. All controlled by iPhone app. If I really need to fiddle with something on the Mac, I can connect to it using Screen Sharing from another Mac. Audirvana doesn’t need too much horsepower unless say, you are oversampling 44Khz to the maximum of your DAC or some other compute intensive task. M1 Mac is cheap, but overkill.
Since there is a free trial, I just think everyone should just listen and see if Audirvana sounds better with their equipment. Not everyone hears a difference, but I do.
Separately, for the HT enthusiast who has a musical setup, try 5.1 music DSD files ripped from multichannel SACD. I play them from a SD card attached to my Panasonic UB820 (Audirvana doesn’t understand those files).