USB Audio with Logic Pro Sample Rate Mismatch

    I just experienced the following issue with v 9.0.5 and 3.4.3.2 which I just installed this morning. 9.0.5 is the first version I have installed that supports the new USB interface. Once installed I recorded a track in Logic Pro 10.7.8 which recorded fine and played back fine a number of times. I then turned off my Kemper Rack and closed Logic for a bit then started up both again a few minutes later. I then proceeded to load that same Logic track I had just created but now on playback I had no sound. I checked settings and everything was still set up correctly, I tried playing the track again and once again no audio output but Logic threw this error below. I then proceeded to reboot both my Mac and the Kemper Rack and then everything was back to normal and I once again had audio for that track. Yes, that track was recorded at 44.1KHz. BTW, the Mac Mini M1 is running Ventura 13.4 . I'm also monitoring through the Kemper Headphone jack into IEM's.




    Edited 5 times, last by Lnk97438 ().

    I have the same issue with Ableton on Windows with the latest official release (also had it with the beta) but that one tells me Ableton does not support 11020 as a sample rate. Works fine in Bitwig though. Sorry to but in to your thread.

    The Kemper USB interface for Mac (9.0.5) definitely still needs work! I've noticed that toggling direct Monitoring on and off a few times can cause Logic to loose the audio signal. Definitely not ready for prime time!

    Update: It happened again today. I'm pretty sure what causes it is when you have a Logic session open and you open RM. That will sometimes cause the mismatch error to happen. Today I had my Logic Session opened and decided to open RM in order to adjust the DAW Volume setting. All of a sudden Logic threw that error again and all audio output on playback stopped. I was once again unable to get it back and had to reboot both the Kemper Rack and the Mac Mini M1 to get things back to normal. Yesterday the I/O buffer setting for Logic was at 64 but today I had it increased to 128 and still got the error. There are other times when RM Is opened on the desktop while I'm playing back a recorded track in Logic and it will cause the track playback to start stuttering. I'm talking about a session with only one recorded guitar track on it.


    Edited 9 times, last by Lnk97438 ().