The 518 gives a choice of Consumer or Pro SPDIF

I tried both and cant hear any differance, so the idea of 'Q-Data' sounds right, and as I have no need for it I use Pro 24 bit into the 565.

Cheers, Chris smile

No 18 in the Hall of fame smile I have simple tastes; I am content to settle for the best:
GIK monster bass panels, rear wall. QNAP TVS 471i3. Roon into DSP5200SE via 210/ 218 zone... Explorer 2. Bluesound Pulse 2, Mini & Flex. 596v1, 518, Foxsat HD, Sony BDP, Pioneer 5090, 2 Chromecast's for LRB videos. MS200 to F80 for a Roon zone