@Al
Apologies I wasn’t clear – I mean one of the small adaptors which has a USB-C plug and a USB-A socket, so you can then connect a standard USB-A to USB-B cable.
There will be no difference to audio with TB3 vs TB4, as long as the port supports USB 2.0 (which it should), that’s the speed it will run.
As a slight aside, when streaming ‘live’ data (audio), it can’t be transferred any faster than it’s being created.
Most ‘this connection is much faster’ statements are based on transfer of existing data e.g. storing a large file to an external drive.
Thanks,
Keith.