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When you installed the drivers, did you also remember to bypass the security and allow the drivers to complete their installation per the instructions here:

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Hi,
i downloaded and installed the new driver 1.2.0 with macOS Catalina support for the DJM-750.
In my Catalina test installation on a MacBook Pro (Retina, mid-2012), I still don't see the mixer in the Audio-MIDI setup as an audio device.
Can anyone help me further?
When you installed the drivers, did you also remember to bypass the security and allow the drivers to complete their installation per the instructions here:

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I don't have seen the "System Extension Blocked" message. Will try to reinstall the driver in a few days.
thx
hi,
i just reinstalled the driver and allowed it under security. After a restart it works now.
thx for the help 👍

Awesome - enjoy!