- 121 -TrebleAdjusts level to enhance or minimise sharper, higher sound output.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(On / Off)Provides a dynamic enhancer of width to simulate improved spatial effects.Volume settingsHeadphone VolumeAdjusts the volume of headphones.Auto Gain Control(On / Off)Automatically regulates large sound level differences between channels andinputs.Volume CorrectionAdjusts the volume of each individual channel or input mode.Speaker Distance to Wall(Up to 30cm / Over 30cm)Compensates for the low frequency sound due to the distance between thespeakers and the wall.● If the back space between the TV and wall is within 30 cm, Up to 30cm is