[402] AMZ Construction

Date: April 2nd, 2009 | Comments : [1] | Categories: DIY, pedals.

AMZ lab



[359] Boosters Are Not Buffers

Date: March 28th, 2009 | Comments : [6] | Categories: DIY, pedals.

LPB1 booster

Boosters are not buffers! While it is possible to make a booster that also provides a buffering action, the vast majority of the boosters commercially available ready-made or kits, do not have the proper design to be buffers.



[353] Empress Tremolo VST plugin

Date: March 26th, 2009 | Comments : none | Categories: pedals.

Empress VST

Now, the sound of the Empress Tremolo pedal is available as a VST plugin for MAC or PC use! Check it out at:



[140] Coyote-1 Open Stomp Arrives!

Date: August 15th, 2008 | Comments : [3] | Categories: pedals.

Coyote-1 Open Stomp

The Coyote-1 Open Stomp pedal has arrived! The picture above is my actual unit. I’ll have more to report once I run it through some tests.

The documentation included on the CD that comes with the pedal is quite thorough and also includes a full schematic with datasheets for the major components. A quick look at the schematic reveals it to be a solid design.

Coyote-1 Open Stomp


[104] Multi-Purpose Booster & Buffer PCB

Date: June 27th, 2008 | Comments : [1] | Categories: DIY, pedals.

AMZ Multi-Purpose FX PCB

This is the Multi-Purpose pc board that can be used to build a variety of projects to use as boosters or buffers, including designs for circuits using bipolar silicon, germanium, jfet and mosfet transistors. Each board purchase includes a link to a page of example circuits (with parts lists) that may be used with this board.

Circuits that can be built on this pcb include:

  • Silicon Transistor Booster
  • AMZ Muffer
  • AMZ Muffmaster
  • AC128 Germanium Transistor Booster
  • PNP Rangemaster-type Treble Booster
  • Germanium Transistor Buffer
  • Jfet Transistor Booster
  • Jfet Transistor Buffer/Line Driver
  • Mosfet Transistor Booster (not the AMZ Mosfet Booster)
  • Mosfet Buffer
  • Power Supply Filter
  • and MORE!

Read more about this versatile circuit.


[103] Open Source Stompbox!

Date: June 18th, 2008 | Comments : [3] | Categories: pedals.

OPenStomp prototype

The OpenStomp™ Coyote-1 is an open source audio effects processor built for guitar players. With the Coyote-1 users can develop custom audio effects in software (like distortion, echo, chorus etc.), mix multiple effects to build “patches”, and exchange those effects and patches with the OpenStomp™ community.



[86] Cartoon Your Pedalboard!

Date: April 5th, 2008 | Comments : none | Categories: pedals.

cartoon pedalboard

Just for fun, there is a page at HCFX with cartoon images of pedals that can be used to make a graphic representation of your pedalboard. Plenty of excellent user-submitted images are free for downloading. Make your own pedalboard graphic:

Cartoon Your Pedalboard


[73] Premiere Guitar magazine (again)

Date: February 20th, 2008 | Comments : [1] | Categories: pedals.

Premiere Guitar magazine

I got a mention again this month in Premiere Guitar


[70] AMZ Online Store

Date: February 12th, 2008 | Comments : none | Categories: pedals.

Big Muff PiA recent email from Amazon said that most of the links on my site were using an obsolete technique that they will no longer support at the end of the month. I looked at the new specifications and could not find a direct link that suited my use…  it may be available but it’s not worth my time to sift through their info to find it.

So, I’ve moved my large collection of books on effects pedals, amps and guitars to a new section.  Take a minute and have a look around in it:

AMZ Online Store


[68] Sweet Sound Electronics

Date: January 31st, 2008 | Comments : [2] | Categories: pedals.

Sweet Sound effects pedals

Bob Sweet, maker of the Mojo Vibe, Ultra Vibe and other excellent pedals, has been diagnosed with cancer. He has a tumor that is malignant and will need to be removed and treated with chemotherapy, and radiation. Bob does not have medical insurance and the treatments that he requires will be very expensive and have already taxed Bob and his wife financially.

I ask that you donate what you can to help our friend, so please send a Paypal contribution to his email address at b0bsweet@bellsouth.net. Every little bit helps with Bob’s medical bills as he continues his treatments.

I am sure that many of us have had family members and friends that have battled this disease.

Musictoyz has established a Bob Sweet Charity page for information and updates.

My contribution has been sent. Please help if you can. Many thanks in advance!




AMZ Home Page

Guitar FX PCBs