spotify equalizerAntonio Villas-Boas/Tech Insider
If you've ever been underwhelmed by the sound of your music while using Spotify on your smartphone, there's a feature in the app that can help that.
Spotify introduced an equalizer feature to both its Android and iOS mobile apps back in 2014, and it lets you customize the way your music sounds.
Depending on your favorite music genre, the default settings for bass, mids, and/or treble might make your music sound flat and lifeless, even if you're using a good pair of headphones. 
In fact, good headphones tend to reproduce flatter sound so that you can adjust the bass, mids, and treble levels to your liking.
The setting can be hard to find, so here's where to find the equalizer in Spotify and how to use it: 

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