The what-hifi reviewer definitely did not have a good seal with his ear and the buds, which results in the typical thinness sound quality when an optimal seal is not achieved. Most other reviews have praised the Galaxy buds to have pretty good sound quality. I find them to have adequate bass, definitely not a bass monster, but certainly not thin sounding. It sounds pretty good, balanced sound. The treble very occasionally borders on sibilance, else there is probably very little to fault on the sound quality.