Name: Schiit Bifrost Uber / USB Gen 2
Receiver: McIntosh C15 Preamp, MC2105 power amp
DAC: AKM4399
Async: YES
Working with Volumio: YES
Tested Versions and Platforms: Volumio 1.55, Raspberry Pi 2 Model B
Harware Mixer on Volumio: None
Buying Link: schiit.com/products/bifrost
Comments: Out of the box, the DAC didn’t work with Volumio. I kept receiving “usb 1-1-port2: over-current change” errors in dmesg with no audio only a clipping sound. To resolve this I had to add the following to /boot/config.txt:
max_usbcurret=1
max_usb_current=1
which then allowed the DAC to show up in my devices list, I could select it and it works brilliantly now.