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Overdrive / Boost

Thank you for purchasing the Rockbox™ Overdrive / Boost. We have spent hours listening and fine-tuning this pedal to 
bring you a true professional overdrive, with features that give you a wide range of settings for maximum versatility. 
This is a true-bypass pedal. the circuit is bypassed and the signal passes directly from input to output when the pedal is 
switched off. 
 

Note: This pedal has a lot of gain! It is possible to send your amp into oscillation with some settings. Be sure to 
lower the gain on the pedal AND your amp before connection. 

  
Gain - Sets the overall volume. Use this to match volume or give a boosted output when the pedal is selected. 
Drive - Sets the amount of distortion, or boost in clean boost mode.
Tone - Use the tone control to set the amount of treble boost in the signal. 
Bass Boost - Select the Up position is boosted bass. Down position is the normal setting. Use this if you are not getting 
enough bass with single coil pickups. 
Drive / Boost Select - 

WARNING! EACH DRIVE SELECTION HAS A DIFFERENT OUTPUT VOLUME! TURN THE GAIN DOWN 

BEFORE CHANGING THE DRIVE / BOOST SETTINGS!

Up position - Asymetrical clipping. A darker, ‘Plexi’ type sound. 
Middle position - Clean boost. Careful! With the diodes out of the circuit, it gets loud!
Down position - Symetrical clipping. A more open, tube-like sound. 

A/C Adapter - Uses standard 2.1 x 5.5mm 

Center Negative Polarity

 9v adapter, such as a Boss. You may also use 

Center 

Negative

 18v supply for a more open sound. Using an A/C Adapter bypasses the supplied internal 9V battery. Be sure to 

check the internal battery regularly for leakage. 

WARNING! SUPPLYING IMPROPER VOLTAGE OR POLARITY CAN DAMAGE THE UNIT! DAMAGE TO UNIT DUE TO 
IMPROPER POWER SUPPLY IS NOT COVERED UNDER WARRANTY!

This product is warrantied against manufacturers defects in workmanship and materials to the original purchaser for a period of one year 
from the date of purchase. Failure due to the following will void the warranty: Rockbox is not responsible for failure due to modifications, 
abuse, incorrect power supply or repairs done by others. Warranty repairs are performed at Rockbox. Purchaser is responsible for shipping 
charges to Rockbox. Rockbox will repair or replace at its discretion. 

GAIN

OUTPUT

BASS BOOST

DRIVE

TONE
DRIVE / BOOST 
SELECT 

INPUT

A/C Adapter

FOOTSWITCH

Rockbox Electronics • 760 Meridian Way • San Jose, CA 95126 • 408-279-9400 • www.Rockbox.com 

9V Battery  
(Internal)

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