The VR-120HD's Scene Memory function has been set not to recall audio settings in the factory default state. To recall audio mixer settings stored in a scene memory, set the menus related to audio to "ON" as you need.
Follow the steps below:
Press the [MENU] button >"Scene Memory" > In the "Load Parameters" screen, turn any of the audio menus you wish to recall "ON".
For details on the audio menus, see "Menu List" in the VR-120HD Reference Manual.