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Mad Professor Deep Blue Delay 
ELECTRICAL SPECIFICATION:

• Current consumption 25 to 32 mA 
  depending on delay setting

• Voltage range 8V to 15V 
  (below 7.5V delay signal will be muted)

• Input impedance IZ 180K ohms

• Output drive capability 10K ohms

• Maximum input voltage 2V peak 650 mV rms

• Signal to noise ratio 80 dB

• Delay time approximately 25 ms to 450 ms

• Power requirement supplied via 2.1 mm 
  DC socket

• Input and output connections via 1/4” 
  phone jack

• Complete bypass and input of circuit
  grounded when in bypass

POwER REquIREMENTS:

 

6F22 9V battery or DC eliminator 2.1 mm plug 
center negative and positive sleeve.
 

NOTES: 

 

DBD is protected against wrong DC eliminator po-
larity. Fuzzy sound is a sign of low voltage. Maintain 
recommended voltage for best results. 

The manufacturer claims that the above mentioned 
product fulfils 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.

MAD PROFESSOR AMPlIFICATION lTD 

Finland 

www.mpamp.com • [email protected]

This product is manufactured by

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