MUSIC VOLUME: If music be the food of Borderlands 2, play on.

SOUND EFFECTS VOLUME: Adjust volume of gunshots, footsteps, etcetera.

DIALOG VOLUME: Adjust volume of characters when they speak.

SUBTITLES: Toggle whether or not dialog appears in printed text at the bottom of the screen.

PLAYER CALLOUTS: Toggles all quips and callouts by player characters.

PUSH TO TALK: If this is off, you will constantly transmit any sound your microphone picks up. On gives better network performance.

VOIP CHAT VOLUME: Adjust the volume of incoming voice chat.