"Equalizer settings" refer to the adjustments made to the sound frequencies of audio playback devices. It allows you to modify the levels of different frequencies (bass, treble, etc.) to achieve a desired audio output. Full definition
You may know what an EQ is, but do you know how to adjust equalizer settings for the best possible sound? (digitaltrends.com)
Small spaces are actually the perfect place to try out Smart Sound, Google's algorithm that allows the speaker to automatically tweak equalizer settings to push out the best sound depending strictly on what the layout allows for, as picked up by its internal microphones. (techradar.com)
The Dolby Mobile audio drivers allowed us limited equalizer settings for fiddling with treble and bass. (laptopmag.com)