I’m with
@abitdeef on how the N3Pro sounds.
@Lokiiami I am using the N3Pro like a 5K - but with tubes! Mostly as an LDAC receiver, and also as a USB DAC; I know you saw my posting on the N3Pro thread earlier today about the issue it has with uninterrupted charging, unlike the 5K which lets you turn charging off. Getting the N3Pro I hoped for a sidegrade with a very different signature, and maybe even an upgrade - after all the Cayin is 4x more expensive in spite of its antiquated screen and software. Well I got both. I find playback on the N3Pro richer, fuller, more involving and emotional, more organic.
The 5K is still wonderful, and so clean! It’s a damn clinic. Software-wise it’s also much better than the N3Pro, more controllable and reliable. And BT is cleaner, everything feels more stable.
As to size, while I hate thick DAPs at least the N3Pro has a good justification for it: those tubes do take up some space! It’s satisfying physically and still really small.
The 5K ditched aptX-LL, which is a trade-off where low-quality, 160kbps streams allow reduced lag, and replaced it with aptX Adaptive, which ensures lag-free transmission with better quality. The problem is that almost no emitters support Adaptive for now.