Official comment
Looks like you didn't install the drivers.
If you're running High Sierra, you'll need to install the drivers once, then disable the High Sierra driver security, and install the drivers a second time.
Hi everyone.
i just bought a ddi-rb controller and can't use it correctly on my mac because of somme issues.
First of all, i installed the last drive and firmware.
When i plug my controller and use it with rekordbox, the sound can be here on the mac speakers (master pc out mode i guess ?). Cool, but i have no sound in headphone and when i plug my external speaker, it doesn't work too, the sound keep playing on my mac speakers...
I don't understand why the controller soundcard is not recognize.
I look up to toggle the pc master out button but can't find it ! he's not on the top right of the rekordbox screen... I can't make any change in the audio config of rekordbox.. as you can see on the screen bellow i don't have the DDJ-RB to choose.

Is somebody have a solution ?
My english is not that good and i apologize for that.
Looks like you didn't install the drivers.
If you're running High Sierra, you'll need to install the drivers once, then disable the High Sierra driver security, and install the drivers a second time.
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Thanks Pulse for your response.
I already installed the last driver and never meet any probleme during the installation. I ever didn't get the "system extension blocked" message, so the systeme software seems to be allowed already.

No - you won't see an error during installation, it will appear as if it completed successfully. You have to run the installation once and then go to disable the security immediately; the option to disable it is not available unless you have recently attempted an installation.
Oh my god this is working.
Thank you so much Pulse !
Awesome - glad you got it sorted! Enjoy. :)
I have the same problem no sound on the speakers and headphones. when I was setting up first time I did pick the second option ( speakers settings ) which was the cable from speakers is plugged to the computer ( not to the rekordbox ) and now I would like to change it so how I can restore this setting window ?
I have the same problem,, I have disabled high sierra and it still won't work
@Ethan > You may need to run the uninstaller from the driver package, then restart, run the installer again and disable the security.
I have the same problem, what do I need too Install ?
@Tom > Here's what you need to do...
- disconnect your RB
- open that package, run the uninstaller
- reboot
- open the driver package again, but run the installer this time
- after the installer completes, disable the OS security
- connect the RB
- test