The latest firmware (v2.33 & v2.34) for the Brooklyn DAC has added HID support, but it still does not seem to be detected by Roon, in my case (connected via uRendu).
Firmware revision history:
v2.34 / 2017-05-16
- changed: new MQA indication
v2.33 / 2017-05-08
- fixed: playback failure on osx
- added: mute to “HID” volume control
- added “HID” volume control
Release notes: https://mytekdigital.com/download_library/firmware/BrooklynDAC_firmware_readme.txt
Brooklyn owners can download it here:
https://mytekdigital.com/hifi/support/