Hi People,I'm fairly new here. Been reading over your shoulder. I want to share this with you though.I have an elderly Sound Devices USBPre. Used to be top notch.Defunct since Mavericks it seemed.Not so: I've found a 3rd party driver which is actually working, very low latency to boot.https://www.usb-audio.com/download/Comprises a lot of vintage USB audio interfaces.Just test with the trial, it will work, but with a "beep" every second or so.Once you register, it will work on 1 Mac only, registry is done by MAC address.Very safe precaution this is.The cost may seem prohibitive ( ±60€), but this does not stand up to buying a new audio interface.Please also bear in mind Mac OS is capable of creating "aggregate devices" for audio. These wil add up, no matter what brand, no matter how old, to your channel count in your favourite DAW.See the bigger picture here?Good luck!here goes:https://www.usb-audio.com/download/Thank you Markus Medau for a job very well done! Moderation: Post updated with 'translation' provided by David.