The output settings are in your device's Settings → Playback options. In the app, open your device and go to Settings.
The USB DAC isn't detected
Turn on the DAC and check that its input is set to USB.
Unplug the USB cable from the device and plug it in again.
Go to
Settings→Playback optionsand check whether the DAC shows up inOutput device.If it doesn't, try another USB port on the device and another USB cable.
Restart the device with the DAC already on.
The device doesn't switch between two DACs
When more than one DAC is connected, the device plays only on the one selected in Output device.
Go to
Settings→Playback options.In
Output device, choose the DAC you want to use, then pressSave.
Hardware isn't in Mixer type
Hardware shows up in Mixer type only when the selected output can change its own volume. Many DACs can't, or don't let the device change it.
Go to
Settings→Playback options→Volume options.Pick
Softwareto change the volume from the device, orNoneto use your DAC's or amplifier's volume.Press
Save.
Still not working
Report a bug from the app with the DAC connected and on, and tell us its brand and model and how it's connected (USB, S/PDIF, I2S).

