Mad Professor Ruby Red Booster Owner's Manual

MAD PROFESSOR AMPLIFICATION LTD 

Finland 

www.mpamp.com • info@mpamp.com

This product is manufactured by

ELECTRICAL SPECIFICATION:

•  Input impedance approximately 500K Ohm’s

•  Recommended output load 50K Ohm’s or  

  higher, effects output and buffer output

•  Current consumption@ 9V DC approximately  

  6mA

•  DC supply voltage range 8 - 18V

•  Voltage gain approximately +40dB

•  Treble boost peak +15dB@4KHz

•  Signal to noise ratio 110 dB

•  Effect 3dB bandwidth 70Hz to 7KHz

•  True bypass or buffered (switchable inside  

  the pedal)

POWER REQUIREMENTS:

6F22 9V battery or DC eliminator 2.1 mm plug 

center negative and positive sleeve.

NOTES: 

RRB is protected against wrong DC eliminator 

polarity. Fuzzy sound is a sign of low voltage. 

Maintain recommended voltage for best results.

The manufacturer claims that the above mentioned 

product fulfi ls the requirements as set by  

EN 55013, EN 55020, EN 60555-2 and  

EN 60555-3, RoHS and WEEE. 

Mad Professor pedals carry a 1 year limited  

warranty.