Handwired All-Tube Guitar Amplifiers by Rick Campbell
Schematics - Replacement Parts - Servicing Information

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High Voltage Warning!
CAUTION: This web site contains information about high voltage electronic circuits intended for qualified service technicians. High voltage electricity can be dangerous or even lethal if appropriate safety precautions are not observed. Circuits may still contain dangerous high voltage electricity even when unplugged and switched off. If you don't know what you're doing, don't attempt to build, repair, modify, or otherwise work on such circuits yourself. Any use of the information on this web site is AT YOUR OWN RISK. The author(s) of this web site disclaim any and all liability for consequences of your use of this information.

General DIY Info

Some of the features that are important to the sound and character of many Rick-Tone amps also makes them very appealing to do-it-yourself amp builders and electronic hobbyists:

  • Minimal number of active stages between guitar and speaker.
  • Use of readily available tubes and other parts.
  • Overdriven tube sounds at low-Wattage 'neighbor friendly' volume levels (most models).
  • Overall simplicity of the circuit designs.

The following information was originally intended to assist repair technicians in maintaining Rick-Tone amps, but you may also find it useful if you are building your own amplifier.

DIY Policy

I don't have any objections to individuals building their own amplifiers based on Rick-Tone circuits. In fact, all of my amp circuits were inspired, in one way or another, by the circuits of other amplifiers that already existed before I even knew what a vacuum tube was. There is very little original in the world of tube amplification[1], no matter what some boutique tube amp builders would like you to believe. So, please feel free to build your own amp, or even many amps, derived from the circuits on this web site. Even sell them commercially if you wish. I don't have a problem with that.


The one thing I do have a problem with is when someone uses my name or the Rick-Tone trademark without my permission. So go ahead and build all the amps you want, but please don't call your amp a Rick-Tone and please don't use my name or the Rick-Tone name or logo to describe, advertise, sell, promote, or otherwise refer to your amp. If you have questions about this policy, please e-mail me.

[1] Of course there's always room for innovation and creativity in any technology, even a very mature technology like vacuum tube amplifiers. Nevertheless, the vast majority of newly manufactured tube amps don't stretch beyond what was already established practice by the middle of the 20th century. My amps are certainly no exception.

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Annoying But Necessary Legal Stuff: All site design, drawings, photographs, graphics, and written material Copyright © 1984-2014 by Rick Campbell except where otherwise stated herein. All rights reserved worldwide. Unauthorized reproduction or distribution of material from this publication is a violation of U.S. and international copyright and other applicable laws. Any use of the information contained herein is entirely at the user's own risk. The author(s) of this web site explicitly disclaim any liability for consequences of your use of the information contained herein. "Rick-Tone" is a trademark, and may not be used elsewhere without express consent. Availability, pricing, and other details of any products or services that may be described herein are subject to change without notice.