Because I wanted to control volume from my MPD Client.
The only two choices of mixer for Digi+ Pro were None and Software.
(I think it is because Hardware mixer does not make much sense to Digi+ as it is not a DAC).
Only Software allows MPD Clients to control volume.
Yes, I saved settings before checking mpd.conf.
Original autido_output section of mpd.conf. (Mixer Type was “None”)
audio_output {
type “alsa”
name “alsa”
device “hw:1,0”
dop “no”
}
After setting Mixer Type” to “Software” and “MPD Clients Volume Control” to On.
audio_output {
type “alsa”
name “alsa”
device “softvolume”
dop “no”
mixer_device “SoftMaster”
mixer_control “SoftMaster”
mixer_type “hardware”
}