2nd page mate.
"To evaluate the potential of Yamaha's NX-N500, I first had to gauge the quality of available source signals. The NX-N500 was discriminating enough to explore different inputs and resolution settings. Not all were created equal. From the start, the merits of higher resolution files was readily apparent. The best results came from the wired connection to the music server. This produced superior detail, dynamics and soundstage from local files and Tidal streaming. Wyred designed a clean circuit and it showed all the way down the playback chain. A close second was the wireless connection from the server. This gave up a small amount on all fronts, most noticeably as some dynamic compression. Third was Apple Airplay, tailored to be more forgiving. It was guilty of greater compression on dynamics and depth and additionally compromised on transient behaviour by dulling leading edges and prematurely truncating trailing edges. It remained pleasant but obviously lost information by direct comparison. Bluetooth was still a little further back in the pack but remains a decent alternative for those without access to better. These results were achieved using the highest quality resolution settings that the various programs would allow. If you opt for lower settings, expect inferior results."
Airplay being inferior makes sense because that is apple's bespoke format which from what I know converts/compresses to its own format.