Hi-res music needs a proper DAC - neither a PC nor the Moment have audiophile DAC's.
Whether you can be (or any of us) can bothered to go that route is a different question.
And whether the uplift in quality is worth the extra cost is subjective.
If you're unsatisfied with regular Deezer or Deezer Hifi on your current setup, that's the question I'd ask myself.
Recently I thought about going down the (more) audiophile streamer / DAC route, for 2 reasons.
1.My Moment / BL18's (plus BL19 on occasion) music listening setup is good, but I wouldn't describe it perfectly satisfying. (I end up Tidal streaming through USB on my MBP to very good headphones, for when I really want to get lost in some music). The Moment / BL18's setup is good enough for everything but a serious listen. I don't have space for 5s/50s.
2. The experience using the Moment / iPad app is unsatisfying....especially when it comes to discovery, browsing, creating playlists etc. It's fine, but something like Roon looks much much better. If I went down the audiophiles route, I'd pay the 100 euro per year for the Roon experience, it really does look fabulous.
Anyway, if your question is more one of curiosity as opposed to serious consideration of "improving your experience", then a PC DAC won't expose the full benefits of lossless or hi-res.
I'd be interested for those forum members who introduced an Auralic streamer into their setup, what were their experiences. The Auralic is seen as a step up from Sonos, Bluesound streamers, but sill not what the audiophiles community would scribe as a top end solution.