Six months ago I had a shop upgrade the component speakers in my 2026 Crosstrek. They also added an extra set of tweeters in the back. At their recommendation I did not add an amp or tuner and just tweaked the settings until everything sounded good. They said I could always come back and add one if I felt later that it needed it.
I've been quite happy with the results until now.
I don't play music very loud, so there's little chance I damaged the speakers somehow.
Lately I'm getting very strange electronic feedback between songs or in the background when the music goes very soft. It sounds like scales on an electronic instrument.
Oddly enough there is a song I actually have on my playli