Below you will find brief information for Elite 85t, Elite 65t Titanium Black, Elite Active 65t Copper Blue, Elite 65t Copper Black, Elite 65t Gold Beige, Elite Active 65t Titanium Black, Elite Active 65t Copper Red, Evolve 65t MS, Evolve 65t UC, Elite Active 45e Navy. This document provides instructions on how to adjust the bass for music listening using the Jabra Sound+ app. You can manually adjust the music equalizer or tap Bass boost in the music presets. The availability of these options depends on the selected 'Moment', which you can customize. The EarGel fit and seal are important to obtain the best sound quality. You can download the Jabra Sound+ app from Google Play or App Store.