User Manual
MGP16X/MGP12X Owner’s Manual
13
Quick Start Guide
Step 4 Getting Sound to the 
Speakers
1. Adjust the channel GAIN controls so that the 
corresponding peak indicators flash briefly on 
the highest peak levels.
NOTE
To use the level meter to get an accurate reading of the incom-
ing signal level, turn the channel PFL switch on. Adjust the 
GAIN controls so that level meter indication occasionally rises 
above the “<” (0) level.
Note that the PHONES jack outputs the pre-fader signal from 
all channels for which the PFL switch is ON, so that those sig-
nals can be monitored via the headphones.
2. Turn on the ON and ST switches for each chan-
nel you are using.
3. Make sure that all PFL and AFL switches are 
set to off ( ).
4. Raise the STEREO master fader to the “0” 
position.
5. Set the channel faders to create the desired 
initial balance.
6. Adjust the overall volume of the STEREO mas-
ter fader.
The overall headphone level is adjusted by the MONITOR/
PHONES control.
NOTE
If the PEAK indicator lights frequently, slightly lower the chan-
nel faders to avoid distortion.
Step 5 Using the Built-in Digital 
Effects
1. Turn the PROGRAM knob to select the desired 
effect type.
To select a reverb effect, use the knobs, and set FX1 to any 
program, or FX2 to one of the programs 1 to 5.
2. Turn on ( ) the FX1/FX2 ON button.
The button lights up when it is turned on.
3. Set the FX1/FX2 RTN fader to the “0” position.
4. Use the channel FX1/FX2 knobs to adjust the 
effect depth for each channel.
5. Use the FX1/FX2 RTN fader to adjust the over-
all effect depth.
Note that you can use the PARAMETER knob to adjust the 
sound characteristics of the selected effect. If you have 
selected a reverb effect, the knob adjusts the reverb time.
1
2
1
2
4,6
3
1,6
6
53
Level meter
MONITOR PHONES control
GAIN controls
ON switches
PEAK
indicators
ST switches
PFL switches Channel faders AFL switches
STEREO master fader
45
1
3,5
2
PA R AM ET E R
controls
FX1/FX2 controls
FX1/FX2 RTN faders
ON buttons
PROGRAM knobs










