@Peter-Ostry thank you for your answer! It happens EVERY time when I use sylphio, BUT ONLY for the trumpet / muted trumpet sounds.. And in general not on the first note.. So something is not ok with the trumpet sound..

I have always a problem with the trumpet noise, which comes up every time sooner or later.. Check it around 1:00 in this video.
Who knows the solution? By the way this is my favourite sound on my sylphio.
https://photos.app.goo.gl/HnZKGb34QaMJayS96

Note: I did not have any answers from Aodoyo to any of my emails about that.
Thanks
Mate