Traveling to Vienna is considerably more involved for them than traveling to Munich. Therefore, it is possible that they may skip Vienna and instead join in Regensdorf.
Sorry, I've only just seen this post. In Munich 2024, it seemed the same to me with regard to the loudspeaker.
The electronics, on the other hand, are very high-resolution and neutral. In any case, it is not midrange centric (heard on other, quite neutral loudspeakers).
I do the same...but as visitor not as exhibitor
Just a suggestion: It would be very nice if Zeiler Audio offer also HQ streaming (Qobuz) for their demos at audio shows. This makes comparative listening so much easier
Zeiler at the Finest Audio Show in Regensdorf, Zurich last weekend. As always it was a pleasure to meet Mr. and Mrs. Zeiler. Such lovely people and a top-notch team.