Pioneer AVH-P7650DVD Operation Manual page 60

Section
11 Multi-CD Player
1 Touch A.MENU and FUNCTION and then
touch COMPRESSION.
# If the multi-CD player does not support
COMP/DBE, NO COMPRESSION is displayed
when you attempt to select it.
2 Touch ab to select your favorite set-
ting.
Touch ab repeatedly to switch between the
following settings:
OFFCOMP1COMP2OFFDBE1
DBE2
# You can also select the desired setting by mov-
ing the joystick up or down.
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