This method has worked for me on Intel MacBook Pro 2018 running Sonoma (14.6.1). Thanks @matt9 for the pkg installer and @tyronet for the concise and updated instructions. I've now got my Mackie Onyx 1620i up and running flawlessly, and haven't experienced any hangups or kernel panics as others had earlier reported. I did the optional re-enable SIP (without kext) afterwards, and all seems to be good.
If you re-enable SIP, the code should be:
csrutil enable --without kext
daneover
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