Pioneer DEQ-P9 - Manual (Page 11)

Switching to the Audio Menu
When the system is ON, you can adjust the sound quality.
Main (Main Menu)
= Equalizer (Equalizer Menu) = Network (Network Menu)
3. Press the BAND button and cancel the Audio Menu.
Cancel the Audio Menu to return to the operations screen of the source currently in use.
2. Operate the mode.
1. Each press of MENU button selects the desired Audio Menu in the
following order:
10
ENGLISH
ESPA
Ñ
OL
DEUTSCH
FRAN
Ç
AIS
ITALIANO
NEDERLANDS