Unfortunately, the manufacturer itself does not specify this exactly:
With the equaliser you can adjust the sound according to your wishes.
Press the MENU button and select [Audio Settings] > [Equaliser] with the / buttons.
[Audio settings] > [Equaliser].
> Press the ENTER button.
Alternatively: Press the EQ button (19) on the remote control.
> Press / to select an equaliser preset. Press the ENTER
Press the ENTER key to accept the selection.
Unfortunately, there is nothing about bass:
https://www.technisat.com/assets...