MacOS Sonoma 14.0 has added a 'Voice Isolation' feature for audio inputs that can be activated on applications. If this is enabled the audio quality can be affected. This feature was designed to be used with video conferencing applications and not for Digital Audio Workstations (DAWS).
We strongly advise disabling voice isolation if you are having audio quality or inputs issues. Please set the Mic Mode to 'Standard'. Please see the following article from Apple for information on how to change microphone modes.
https://support.apple.com/en-ie/guide/mac-help/mchle82b42f0/mac