Is the S61 and Komplete 14 Ultimate fully compatible with Sonoma 14.5
The S61 is supported as long as it's a MK2 or MK3. Most of K14U seems to be supported now. You can check the full compatibility list here - https://support.native-instruments.com/hc/en-us/articles/13671802084765-macOS-14-Sonoma-Compatibility-Statement
Thanks. Also I am having issues using the S61. I don't hear the sounds and the keyboard seems not to work..
The S61 does not produce any sound on it's own.
It's a controller - you need to give it a VST instrument to control within Komplete Kontrol or a DAW context.
VP
If you're using Kontakt or Komplete Kontrol open the preferences and check that the S61 is selected as a MIDI input. If that's not set it'll work to control the browser and all the plugin parameters but you don't get any actual sounds.