Hello,
I've connected the Pro-ject Head box DS with my PI.

[email protected] ~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: P2 [Project HeadBox DS USB Audio 2.], device 0: USB Audio [USB Audio]
Subdevices: 0/1
Subdevice #0: subdevice #0

When I Start to Play a file (eg. Flac 96 kHz) the DAC recognize the corret Sample-Rate and Show it up in his Display, so i think everything Must work correct. But there is no Sound Output.

The mpd.conf is:
audio_output {
type "alsa"
name "USB Dac"
device "hw:0,0" # optional
# format "44100:16:2" # optional
# mixer_device "default" # optional
# mixer_control "PCM" # optional
# mixer_index "0" # optional
mixer_type "hardware"
mixer_device "default"
mixer_control "PCM"
}
#

Alsamixer Shows:
──────────────────────────────── AlsaMixer v1.0.25 ────────────────────────────────┐
│ Card: Project HeadBox DS USB Audio 2. F1: Help │
│ Chip: USB Mixer F2: System information │
│ View: F3:[Playback] F4: Capture F5: All F6: Select sound card │
│ Item: Project HeadBox DS Clock Selector Playback [Off, OfEsc: Exit │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ ┌──┐ ┌──┐ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
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│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │
│ ┌──┐ ┌──┐ └──┘ └──┘ │
│ │MM│ │MM│ │
│ └──┘ └──┘ │
│ 100100 100 │
│ Project HeadBox DS Project HeadBox DS Project HeadBox DS │
│ │
│ │
│ │

Can anybody help to enable the Output?

Best regards, Peter.