Bring up the contextual menu (or press the Options button) to activate the equalizer line. In this menu you can select one of preset equalizers or create your own settings. When activated, the button will take you to your own dialog box where you can adjust the sliders each band sound. Set save OK, Cancel to cancel the original settings when activating the button to return to the original setting.
You can also change the playback of stereo to mono, so both channels will be transmitted in the same proportion in both channels. The function does not affect data transfer. To set the output to mono, mono output select an item in the menu settings.