Denon DN-500AV Owner's Manual page 130

Explanation of terms
X
x.v.Color
This function lets HDTVs display colors more
accurately. It enables display with natural, vivid
colors. "x.v.Color" is a Sony registered trademark.
Z
ZONE2
This unit can operate in a room other than the room
where this unit is placed (MAIN ZONE) (ZONE2
playback). The room for ZONE2 playback is called
ZONE2.
BD
124