PeppyMeter and moOde

[GioF_71]

i would like to understand why volumio can work with DSD direct option? and  peppymeter also working

Probably need to ask Volumio how they do that, no one here will know.

They might be adding an additional FIFO output to mpd which works at 16/44 (so dsd is converted), and use that as the source for peppy meter.