I have Volumio set to resample to 48kHz. However, I’m curious if this will only impact files played through mpd, and not music streamed via shairport-sync.

As far as I can tell, the “Audio Resampling” portion of the configuration menu modifies only mpd.conf, which wouldn’t do anything to audio received through shairport-sync. Can anyone confirm?

cat /proc/asound/card1/pcm0p/sub0/hw_params delivers the following when outputting an AirPlay stream via a HifiBerry DAC+ (despite setting the web interface to upsample to 48kHz):

format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 256
buffer_size: 131072