[2197] Voltage Doubler Module

Date: January 20th, 2017 | Comments : [2] | Categories: DIY.

Voltage Doubler module

Voltage Doubler assembled module
The charge-pump voltage booster module. Fully assembled and ready for installation in your pedal or project. Boosts 9v DC to almost 18v. Also provides −9v for PNP fuzz pedals and other circuits that require a negative voltage.

Order the module from the AMZ Catalog Page.



[1665] Good Band Names

Date: January 18th, 2017 | Comments : [3] | Categories: DIY.

I’ve updated the page of FREE Band Names… check it out if you need a name for your rock-n-roll ensemble!

Good Free Band Names


[2190] Tone Report Weekly Issue 159

Date: January 11th, 2017 | Comments : [1] | Categories: DIY.

Tone Report Issue 159

Issue No. 159 of Tone Report magazine has an article on how to DIY my mosfet booster. The author was very complimentary of both me and the circuit, which I greatly appreciate. If you don’t like working with stripboard, as shown in the article, there are pc boards and completely assembled modules available on my catalog page so you can build your own mosfet boost.

The pcb and modules have a refined version of the circuit that improves performance slightly.


[2178] Passive Mixer

Date: December 29th, 2016 | Comments : [3] | Categories: DIY.

Passive mixer schematic

In many applications, A simple passive mixer can be used to combine signals. The resistors R1 – R4 are used to reduce interaction of the signals but they do not completely eliminate it. The values may be adjusted higher for more isolation; try 100k for the resistors.


[2165] Power PCB

Date: October 26th, 2016 | Comments : none | Categories: DIY.

Power pcb

There are a limited number of the revised power pcb that are available. [Now in stock]

The new pcb has several improved/advanced features such as increased efficiency and an isolated output.

Order one (before they are gone) from the catalog page and the latest instructions will be emailed to you.



[2152] Jfet Buffer Modules are back

Date: October 3rd, 2016 | Comments : [1] | Categories: DIY.

Jfet buffer pcb Jfet buffer modules are back in stock!


[2144] How to Mod FX Pedals With Arcade Buttons

Date: August 30th, 2016 | Comments : none | Categories: DIY.

AMZ dpdt relay pcb

DJ Tech Tools has a new article (and video) on How to Mod FX Pedals With Arcade Buttons using the AMZ DPDT relay switch. Check it out!

How to Mod FX Pedals With Arcade Buttons


[2132] Dual Op Amp Modules

Date: August 4th, 2016 | Comments : [6] | Categories: DIY.

Opamp buffer module

Buffer, or Booster, or Direct Box.



[2124] A-B switcher

Date: May 9th, 2016 | Comments : [1] | Categories: DIY.

A-B switch box

My new A-B switch box for comparing pedals. (more…)


[2108] AMZ Guitar FX Newsletter Signup

Date: February 22nd, 2016 | Comments : [1] | Categories: DIY.

fx pedal messNewsletter Sign up for the AMZ Guitar FX Newsletter for free information, tips and tricks on building guitar effects circuits and how to use them.

This is a “low traffic” newsletter, so you don’t worry about your inbox filling up.

Update: Okay, I’m planning more than just a newsletter. How about some podcasts, and videos, or maybe schematics just for subscribers. PC Board giveaways are also in the works. I’m not sure what will be the final outcome, but you don’t want to miss out!

Sign up for the free newsletter.



AMZ Home Page

Guitar FX PCBs