Novice Digital (wired) Question(s)

Going the Apple Airplay route, would you anticipate any appreciable loss in sound quality as opposed to via a cable?  Actually, I’ve been using an Apple TV to more or less do this thru an AV receiver prior to getting the tube amp.  Trouble (?) is that, due to limited inputs on my PrimaLuna Prologue Classic, all such video sources are routed thru the TV, which functions as a switchbox (degradation of signal?). However,... I just happen to have an unused Airport Express lying around.   I guess the only missing link is the DAC then?  One other concern — I’ve digitized a ton of vinyl via Audacity in the form of 16 bit AIFF.  Would this present a problem for a lot of DACs?  Thanks again!

Thanks very much, sfar.  Sounds like a great system....not sure if I’ve got the finances to go that route though.  

I think I’ve got the info narrowed down enough now, re: my own circumstances, to ask a more focused question that’ll help me to decide whether bring digital playback onboard my setup or to stick with it being primarily for vinyl — If I stream music from the iTunes in my Mac via an Airport Express into a modestly priced DAC, (a basic model Cambridge DACmagic or a Schiit Modi 3) and into my system’s integrated amp, can I reasonably expect sound quality as good or better than was the case before this music was ripped into my Mac and was being played as compact discs on a mid-1980s CD player which cost approx. $750 when new?

Thanks for the info, ljgerens,...It’s been most helpful to me in making this process understandable!

Finally got some spare time to do some more web surfing on the topic and, based on what I’d read, decided to go ahead and hook up the Airport Express to the PrimaLuna’s CD input and stream from my Mac’s iTunes without a DAC other than the internal one in the AE.  The Prologue Classic is pretty much old school basic insofar as it only has RCA inputs so the Apple Express is connected via the (3,5mm?) stereo pin into right/left RCA.  Early impressions, after streaming Paul Simon’s “Graceland” (ripped to iTunes from my CD) using the “Remote” app on my iPhone are...well...I’m smiling.  At some times I’m thinking it sounds better than my old Denon DCD 1560 CD player...other times it sounds about the same to me.  Interestingly, I’m finding I have to turn the volume control on the PrimaLuna to about “10:30” with this digital file to attain the same sound pressure most of my LPs create thru this setup (Music Hall MMF-5/stock Goldring cart > Music Hall PA1.2 stage > integrated amp) at 10:00 o’Clock.  It’s always been that digital sources were inherently louder than vinyl...sometimes much so...before this.  I’ve checked to make sure all volume settings sliders on the Mac and iPhone are maxed out so I guess this is just a different order to things.  All in all, extremely pleased!  I’ll probably just continue to enjoy the ‘tunes this way until a “no obligation” type scenario presents itself with regard to trying out an external DAC, if ever.  Truth be told, I still like my vinyl best with this rig but I sure would’ve missed out on a lot had I kept digital streaming relegated to my one-step-above-boombox, workshop system!  Anyway, thought someone might be able to glean some useful info from my experiences here.  Thanks again!