Launched Nov. 14, 2001.
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Spunky photo
Build Shaza Jane's "Spunky"
Small but phat guitar amplifier

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"Spunky" is a simple yet capable guitar amplifier suitable for small rooms, or mic'd into a PA system. While similar to the "Li'l 4x4" in many ways, it has a fuller, gutsier sound as compared to the squeaky-clean timbre of the Li'l 4x4.

Some experience with vacuum valves is recommended, but the project is fairly straightforward and should pose no problems for intermediate valve experimenters.

Demo recording available soon

  • Up to 8 watts output (depending on power supply) 
  • High gain capability (Av=250)
  • 5-stage design 
  • Uses inexpensive tubes and other components 
  • Line-operated series-connected heaters 
  • No global feedback for that authentic valve sound 
  • "Big Muff" single-pot tone control 
  • Simple but very effective compressor circuit included 
  • Headphone output for those shy practise sessions 
  • Optional Line level (Av=10) input/output

Copyright & Disclaimer:
All contents of this website, including schematics, text, diagrams and photographs are Copyright ©2001 by Fred Nachbaur, Dogstar Music. All rights reserved. This site may be freely linked, but none of the contents may be posted anywhere else without express permission of the copyright holder.

The information presented here may be used for personal, non-commercial use only. Any commercial applications of this design or any part thereof requires previous licensing arrangements with the author and copyright holder, Fred Nachbaur.

Article Index:

      1: Introduction

      2: How It Works

      3: Building "Spunky"

      4: Parts List

You may contact me regarding this project at I'd be happy to hear from you, and any bug reports or suggestions for improvement are always welcome.

Free Music Downloads

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