Same here. The sound from either one of a pair of Flip 6 has slight changes for a bit every some seconds and my ears can't just cope with it. [br]
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The speakers are on my left and right hand sides of my headboard and the source of the music has been sitting on my lap (my iPhone 14).[br]
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I tested them by resetting each speaker with "PLAY"+"+" combo, then carefully following the instructions at https://support.jbl.com/fi/fi/howto/setting-up-your-partyboost-speakers-in-stereo-mode-emea/000017052.html[br]
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The sound has been streaming from the Spotify app with premium subscription. I'll be testing this later with other music apps.