use the 1.0.0 driver. It crashes on any macOS later than Sierra.

If the DDJ-SB2 icon is greyed out, delete it and reconnect the controller.

Unlike modern USB Class Compliant controllers (like the DDJ-400 or FLX4), the DDJ-SB2 relies on a proprietary audio driver to communicate with your Mac. Without it, your macOS will see a USB device, but Rekordbox will not send audio or MIDI data to the jog wheels and faders.

Before you install the driver, make sure your Mac meets the system requirements:

Controller not recognized