Great post and thanks for update on your own thoughts.
Have now listened and studied both XPS DR and 555 PS, ( back at Basically Sound). Already shared thoughts on those two options. (I’ll find them and post here).
Thoughts on first psu listen : XPS DR …
Thoughts on second psu listen : 555 PS DR …
Yes, Naim lore suggests 555 PS (non DR) is a better match. More “natural”.
Costs effective we like
But can’t help with any personal experience on that one.
Good luck at the show
Do share anything interesting you see or hear?
BW
R
edit : @silverback there you go - thoughts on psu - for nDAC. Hope that helps?