Fender Bubbler Chorus, User Manual

Rate 1

While the 

Slow

 speed is selected, the Rate 1 control adjusts the speed 

of the modulation.

Rate 1 LED

This LED is illuminated when the 

Slow

 Speed is engaged. Rate 1 and 

Rate 2 are active when this LED is on. 

Depth 1

While the 

Slow

 speed is selected, the Depth 1 control adjusts the 

intensity of the chorus.

Center LED (LED between Depth 1 and Rate 2)

This LED blinks in time with the rate of the Bubbler. 

Rate 2

While the 

Fast

 speed is selected, the Rate 1 control adjusts the speed of 

the modulation.

Rate 2 LED

This LED is illuminated when the 

Fast

 Speed is engaged. Rate 1 and 

Rate 2 are active when this LED is on. 

Depth 2

While the 

Fast

 speed is selected, the Depth 1 control adjusts the 

intensity of the chorus.

Level

The Level control adjusts the amount of the chorused signal added to 
your instrument’s dry signal.

Wave Type Switch

This switch allows you to toggle between sine and triangle shaped 
modulation.

Sensitivity

When the 

Slow

 mode is engaged, the Sensitivity control adjusts the 

threshold for the Bubbler’s dynamically controlled rate. As the Sensitivity 
is turned clockwise, the Bubbler can automatically switch from 

Slow

 to 

Fast

 settings with the changes in your instrument’s volume—softer 

playing will keep the Bubbler set to your 

Slow

 settings; louder playing 

will send the Bubbler ramping up to your 

Fast 

settings. Turn the 

Sensitivity control fully counter-clockwise to disable this feature.