In my experience nothing helps against Amazon's search algorithm. It's known to be the most refined in the world ...
... just not the way you want it.
Everything can make a difference (this time the audiophile saying is true): Amazon can and will alter the results based on the device you are using (mobile or desktop, iOS or Android, Windows, MacOS or Linux, ...), app or browser (which one?), your geographic location, the Amazon site (or Country selection) you're using, your individual product search and browsing history, the time of the day (literally!), your screen resolution (as part of a fingerprint to identify you if you're not logged in and try to avoid cookies and other means of local storage) and plain everything they know about you.
On top of that come sponsored products, which may or may not be clearly identified based on legislation, and search and sort options you might have really applied yourself.
The German Amazon page displays a link to a help page explaining some (few) of these known mechanisms.
View attachment 24876
(To show a localised/translated version of this page you must set the Amazon language on amazon.de according to your preferences, see below.)Produkte im Amazon Store finden - Amazon-Kundenservice
Du findest, entdeckst und kaufst Produkte im Amazon Store auf ganz unterschiedliche Weise. Du kannst beispielsweise eine bestimmte Anfrage in das Suchfeld eingeben oder die Auswahl nach Produktkategorie durchsuchen. Genauso kannst du Produkte entdecken, die nach gemeinsamen Attributen gruppiert...www.amazon.de
The WiiM store banner (marked as sponsored). didn't show until I changed the Amazon language setting to English.
This screenshot was taken from Firefox for Android, not logged in, system language set to German, Amazon language set to English (which mostly means automated translation).
I suppose you're pretty bored by now. So here comes a little fun game to get you over the day: In a web browser of your choice, try to scroll to the bottom of the Amazon page of your country, so you can even find and use the language selector while not logged in.
That should keep you busy for a while.![]()
I appreciate for the very very long explanation

The strange thing is that this happened just recently. And that every other audio brand search is normal. (I have tried quite a lot of keywords...)