Mini-Boosters

Here are some variations on the JFET Mu amp booster made famous by Jack Orman at amzfx. We call it Jack of all Mini-Boosters, mostly as a tribute to Mr. Orman, but also this circuit board will accommodate many variations.  We have shortened the name to the acronym JOAM in some cases.

AMZ Mini-Booster

This is the one that started it all. Jack took the rough design of this JFET Mu amp from an ancient National Semiconductor App note (see bottom of page 5) and refined it into this wonderful booster for guitar. There is lots more information available about this booster at
amzfx Lab Notebook.

• General Build Instructions
• AMZ Mini-Booster Bill of Materials
• AMZ Mini-Booster Schematic file
• AMZ Mini-Booster Parts Layout and Wiring Diagram

Boutique Boost

This is similar to the first version of the Fat Booster. It has the input Gain control and a tone control added to the design.

• General Build Instructions
• Boutique Boost Bill of Materials
• Boutique Boost Schematic file
• Boutique Boost Parts Layout and Wiring Diagram

Common File For AMZ Mini-Booster and Boutique Boost

• Jack Of All Mini-Boosters Ready-For-Transfer Printed Circuit Board Layout File Please Note: This Ready-For-Transfer PCB layout file is not needed if you are buying the Ready-For-Transfer Printed Circuit Board from us.
• Mini Booster Project Revisions History

Would you like a Ready to Solder Circuit Board for this project?