Product Format Clarification
This product includes digital design files only — no physical PCB is shipped.
With these files, you can order PCBs directly from a manufacturer (e.g., JLCPCB, PCBWay) for as little as $2 for 5 boards.
Typical production time is 3 days, and international shipping starts at $12, taking about 4 days via DHL to most locations.
You’re free to edit the design and add your own branding.
Upon Purchase, You’ll Receive:
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Eagle CAD files (.SCH & .BRD) — fully editable and compatible with KiCad
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Industry-standard Gerber files for PCB fabrication
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Quick-start guide explaining how to use the files
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Download link for the free version of Eagle CAD
After purchase, you will receive a payment link by email. Once the payment is completed, the design files will be sent to you within 8 hours. We’re currently working on automating this process, but for now, orders are handled manually.
Note: You must use these files with a PCB manufacturer to produce your boards.
No pre-assembled or pre-made circuit boards are included.
These design files are intended for personal use and small production runs of your own pedals, not for resale as kits or standalone PCBs.
Project overview:
Inspired by DS-1 Distortion, a true icon in the world of guitar effects and a paradigm shift in the history of distortion pedals. Enjoy this classic circuit that offers tight, hard-edged gain with rich harmonics while retaining the unique characteristics of your guitar and playing techniques.
Introduction
Before 1978, most distortion pedals could only deliver harsh, dirty, and buzzy tones. That same year, everything changed when BOSS engineers developed a unique distortion circuit. Hard rock, metal, and punk genres thrived in the ‘70s and ‘80s, and there is no doubt that the DS-1’s tone greatly influenced them.
Typical tone controls only cut highs, but the Chief-D1 circuit features an innovative design that offers far more range. When turning the knob clockwise, the highs increases and lows decrease, while going counterclockwise acts vice-versa. This increases the spectrum and lets you dial in everything from tight, cutting rhythm sounds to smooth, fat lead tones.
Try this top-selling pedal whose unchanged design continues to inspire great music everywhere and do your bit. The world is ready to hear your own signature sound, go for it!
This pedal is a great modding platform. In this board, we included an additional Diode toggle switch and a comprehensive mod list for customizing your drive at will!
Controls
Potentiometers
- Distortion
- Volume
- Tone
Switches
- SW1
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum and Free Stomp Boxes Mods.
For any technical questions regarding this build, don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.






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