- 153 -EqualiserAdjusts the frequency level to suit your favourite sound quality.● This function is available when Mode is set to User.● Select the frequency and change the frequency level using / .● To enhance the bass sound, raise the level of the lower frequency. Toenhance the treble sound, raise the level of the higher frequency.● To reset the levels of each frequency to the default settings, select Resetto Defaults with / and press OK.BalanceAdjusts volume level of right and left speakers.Surround(Stadium / Hall / Natural / Off)Selects surround sound settings.Stadium:Provides the sound effect such as a stadium.Hall:Provides the sound effect such as a concert hall.Natural:Controls the reverberation to make the voice sound clearer.Bass Boost(On / Off)Enhances the effect of bass sounds.ETS61 / ETF62 / ETN63 / ETX64 series onlyDigital Remaster(On / Off)Compensates a compressed audio signal to reproduce the original soundquality.Volume settingsHeadphone VolumeAdjusts the volume of headphones.