ULTRA++ installation & get it working with external mic

Ok, it’s a pitty. But anyway thank you for your help, it is a very nice soundcard for the Pi, very happy with it.

Hi,

I have a problem which is a little bit related to this topic.
I have connected an external mic to ULTRA++ card.
Generally a MIC is working, I can record WAVes using for example the arecord app. The problem is that every time I have a one second (around) delay/break in WAV files at the beginning. I use driver from RASPIAUDIO/ultra2 repository. I have Pi 4B (8 GB RAM), Linux raspberrypi 5.15.76-v8+ .

Could you help me?

Thank you in advance!!!