AMZ is a resource with information about diy guitar effects pedals, stompboxes, audio circuits and tips on how to build them. There are fuzzbox schematics, signal booster projects, audio mixers and much more available free. Take some time to browse the site and discover information that can help you with your next DIY effects pedal project. You might decide to build your own clone of a classic!

Browse the free pedal building info in the Projects section, the Lab Notebook, the Guitar FX blog or many of the links in the left column. Enjoy!

PC Boards are available for purchase for many of my projects, including the AMZ Mosfet Booster, Mini-Booster, SOS overdrive, dpdt relay switch, power supply pcb and more!

Latest posts from the AMZ blog page:

• Diode Test
I set up a breadboard in order to conduct tests on diodes to compare clipping harmonics. The idea is to see if there is really a d ...<more>
• Gyrator Filter Update
I have been working on an updated version of the gyrator bandpass filter calculator that has a chart with instant updating! After m ...<more>
• Analog Music Projects 1.2
I am working on a new issue of Analog Music Projects. The last one came out 24 years ago, so it is time for another one. Actually ...<more>
• SSM2166 Compressor PCB Update
TL;DR: The pedal is not working correctly. I suspect it is a wiring error on my part and I am looking for it. Full Story: I went to ...<more>
• Pedal Power
...<more>
• SSM2166 Compressor
A lot of people have written to me about the Q&D 2 compressor that uses the SSM2166 chip. I looked at the revised pcb a few times ...<more>
• MXR Rockman pcb
I had to open up the new MXR Rockman X100 to move the output switch over to stereo, so I took a picture of the pcb while I had it ...<more>
• Parallel Resistance Calculator
More for my use than anything, is the new online calculator for resistors in parallel. You can find it in the Lab Notebook: ...<more>

Some of the projects that can be made with the AMZ pc boards:

• Jfet mu-follower boost
• Mosfet booster pedal
• Guitar Direct Box
• Dual Output Booster
• Boost and Buffer
• Dual Buffer
• Re-amplifying Interface
• Silicon Transistor Booster
• AMZ Muffer
• AMZ Muffmaster
• A Dirty Boost
• 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
• 9v-to-18v charge pump
• True Bypass Relay System
• and more!

GERMANIUM TRANSISTORS: I have plenty of the 2N1309 and 2N404 germanium transistors, fully tested and guaranteed. They work great in fuzz or booster circuits. Order a pair before they are gone.

Quick Links to AMZ Content
•   Technology of the Mini-Booster
•   The Case Against True Bypass?
•   Is it Legal to Clone?
•   How to wire a DPDT Switch
•   Fretboard Care
•   My Homebuilt AX84 Amp
•   Free Soundcard Oscilloscopes!
•   How to Solder
•   Dr. Quack, Mosfet Boost, Mini-Booster and more!
•   Capacitor FAQ
•   Info About Copyrights
•   AMZ Sitemap

Update - Read about the history of the AMZ Mini-Booster circuit, its origins, and pre-Internet status.

NEW ARTICLES! Bypassing the BMP tone control is a new article in the Lab Notebook section of the site. The Double Tone Control, Tone Clippers and the basics of Pedal Impedance are also recent additions.

The Mosfet Booster, Mini-Booster, Overdrive Pro, Shaka 5 and other complete, ready-to-build guitar effects are located on the AMZ Projects page. Top quality and Excellent sound is Guaranteed. Build one today!

Is it Okay to Clone? Get the info about circuit cloning and copycat pedals!

The Q&D Compressor articles are still available here but the SSM2166 chips are sold out.

The previous AMZ home page is still available as it contained a few links not on this revised version.

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