Mod Kits

Mod kits contain parts to modify or add to your amplifier.

Please note: Some mod kits, such as those with PC boards, take time to assemble before shipment. Please allow 4-6 business days prior to shipping. If you have time requirements, please contact us to inquire about availability and shipment times.



Product Image Item Name Price+
$1.00 Generic/Add-on

$1.00 Generic/Add-on

This item listing allows add-on and upgrade amounts to be added to your Granger Amplification Custom Shop invoice. You may also use this to make...
$1.00

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Bugera 1990 Regulator Mod Kit

Bugera 1990 Regulator Mod Kit

Parts and printed instructions for correcting the voltage regulator issue in early Bugera 1990 amplifiers where overheating of the regulator occurs...
$7.95

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LED Board Kit

LED Board Kit

Brand new! Our LED Board Kit is a great way to add lighting to your amp or other electronic devices! A very easy kit for the beginner-to-intermediate...
$7.95

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Passive Effects Loop Mod Kit

Passive Effects Loop Mod Kit

Easily install an effects loop in your amp. This bare-bones, passive effects loop includes two shorting/switched jacks of your choice, shielded wire,...
$7.95

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5VDC Voltage Regulated Power Supply

5VDC Voltage Regulated Power Supply

Our small, regulated power supply is based on the same regulated 5V supply we use with our 3 Relay Switching Board, and is easy fit into nearly any...
$9.95

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Premium Rectifier Board

Premium Rectifier Board

Many typical rectifier boards/circuits use only cheap 1N4007 diodes. Our Premium Rectifier board includes a whole lot more! UF4007 diodes provide...
$15.00

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PPIV Master Volume Kit

PPIV Master Volume Kit

If you've got an old Marshall, or other push-pull, non-master volume amp, you already know it has to be cranked up fairly high to get overdriven...
$16.00

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Plexi Amp Wiring Kit

Plexi Amp Wiring Kit

New lower price AND more wire! The Plexi wiring kit is specifically designed for wiring any Plexi/British type amp, including the JTM45, JMP50,...
$16.95

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Adjustable Bias Mod Kit

Adjustable Bias Mod Kit

With our Adjustable Bias Kit you can modify your fixed, non-adjustable biased amp so that you can set the bias for optimal performance, and use other...
$17.00

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Fan Kit

Fan Kit

Easily add a cooling fan to your amp. Our Fan Kit features an 80mm x 80mm brushless fan for quiet operation, a metal fan guard, and a very small PCB...
$17.00

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