Denon DN-500AV Owner's Manual page 20

Connecting a CD player
Select the connector to use and connect the device.
Cables used for connections
Audio cable (sold separately)
XLR cable
CD player
AUDIO
AUDIO
OUT
L R
Set as Necessary
Set this to change the digital input connector to which the input source is assigned.
"Input Assign" (vpage 78)
Switch the input voltage with the input level selector according to the connected CD player.
BD
Input level
selector
14