Yamaha O2R Owner's Manual page 37

Resetting the Equalizer
1. Press and hold the (LOW/HPF) button and then press the
(HIGH/LPF) button of the SELECTED CHANNEL - EQUALIZER
controls.
All equalizer values will be reset to their defaults.
LOW/HPF
Q LOW SHELF
Peak - 0.7
F
1 2 5 H z 1.00 kHz
0 dB
G 0 dB
Digital Recording Console 02R Getting Started Guide
Introductory Recording Tutorial
L-MID H-MID
Peak - 0.7
4.00 kHz
0 dB
29
HIGH/LPF
HIGH SHELF
10.0 kHz
0 dB