Pioneer Ddj Rb
The Pioneer DDJ-RB is a USB controller with a built in sound card. It is a class compliant HID but the sound card is proprietary.
You can download the latest drivers and firmware from https://www.pioneerdj.com/en/support/software/DDJ-RB/.
The sound card is proprietary and there are no drivers available for Linux. The HID, however, can be used after adding the following udev rule (eg. to /etc/udev/rules.d/mixxx.usb.rules )
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="2b73", GROUP="users", MODE="0660"
There is no mapping available yet, but the DDJ-SB2 one seems like a sane starting point. (Forum link)
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