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Cool Ideas:

• Dual illuminated Boost controls via Boost footswitch
• 3 band EQ, with Smooth Edge and PlexEQ switches
• 3 effects loops, Universal, Boost, and SideTrak loop 

that works when the pedal is OFF!

• Noise gate with internal adjustments, tracks gain
• Mid Boost switch tweaks Boosted tone to cut through
• Internal Fat switches for warmer Rhythm and/or Boost
• Pre/Post select switches for Universal and Boost Loops
• Can be used as a preamp, or into clean channel
• Runs on 9V-18V, like changing from 50 to 100W amp!
• LED lit knobs when using an adapter

Welcome!  Thanks for purchasing the BigRock  Pro™
  pedal,  the  first  Amptweaker™  handmade  product 
designed with  your advice.  This version of our  very 
popular  TightRock™  &  FatRock  pedals  has  a  dual 
boost  system,  3  effects  loops,  &  added  3  band 
EQ...which  helps  get  even  heavier  tones  not 
available  with  the  standard  versions.    Keep   the 
ideas coming!

good tone comes from tweaking ...

TM

James Brown,
Amp Engineer

Welcome! Thanks for purchasing the BigRock Pro™ 
pedal,  another  Amptweaker™ 
designed with

Summary of Contents for BigRock Pro

Page 1: ...s Can be used as a preamp or into clean channel Runs on 9V 18V like changing from 50 to 100W amp LED lit knobs when using an adapter Welcome Thanks for purchasing the BigRock Pro pedal the first Amptweaker handmade product designed with your advice This version of our very popular TightRock FatRock pedals has a dual boost system 3 effects loops added 3 band EQ which helps get even heavier tones no...

Page 2: ...regulated supply center pin ground 9V is like 50W amp 18V is more dynamic like 100W amp Output Jack connect to next pedalʼs input or amp Gain adjusts distortion switch sets gain ON for modern OFF for vintage Tight set high for aggressive chunky attack low for thick fatter distortion Two Fat switches inside PlexEQ Smooth Sw PlexEQ tweaks mids edge for stack tones Smooth warms highs Gate cuts noise ...

Page 3: ... 18VDC adapter w 5 5mm X 2 1mm positive barrel center ground Housing 14 Gauge galvanized steel Weight 3 pounds Dimensions 5 625 W X 5 D X 2 125 H 2014 Amptweaker LLC 3482 Keith Bridge Rd Box 345 Cumming GA 30041 handmade in USA www amptweaker com Universal Effects Loop effects in this series loop are always active when the BigRock Pro is On A switch on the bottom positions this loop before or afte...

Page 4: ...attack on Rhythm and or Boost Extra Gate turn clockwise for even more noise gating Main Gain Tracking Noise Gate clockwise to increase gating effect down to reduce gate DELAY GUITAR IN OUT NORMAL BRP has EQ always adds Delay when Boost ON Chorus only when bypassed IN OUT EQ SideTrak CLEAN EFX DUAL AMPS Take Chorus OUT to 2nd ʻCleanʼ amp instead of RET of SideTrak for dual amp A B CLEAN FX IN ST Cl...

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