If you own the Satio or the Vivaz, you can now download and install a new application, the free Sound Equaliser.
For most markets there is now an free application called “Equalizer” available on PlayNow in the music category under applications. This equalizer will give you the following different options: Off, Classical, Jazz, Dance, Party, Pop, Rock, Spoken Word, Loudness, Mega Bass and Treble Boost. As I understood it it will equalize all music played in the phone, also the setting it makes is global and stay there if the Equalizer application is closed and also even stays after rebooting the phone. There are two important notes though: First of all this application needs the latest update to work on Satio (on Vivaz it works on the launch SW of course) and also since it’s a separate application it needs to be started separately when you want to start using it i.e. it’s not included under options in e.g. the music player. When an equalizer setting has been chosen it should stay even if the application is closed or the phone rebooted.