Akashic Guitar effects PCB lookup
TONEVOLUME

125B · 2 knobs

PCB Guitar Mania

Chief D1

Based on the Boss DS-1 Distortion· 2 other boards clone it

Category
Distortion· The first distortion
Controls
Tone · Volume
Difficulty
Intermediate
Price
€9.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

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.

Chief D1 1.1v – Building Docs

Chief D1 1.0v – Building Docs

Chief D1 – Drilling template

Schematic

The schematic is in the vendor's build document, page 7. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 56 rows

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RefValueNormalizedTypeNotes
Resistors 26
R11k1k
R2470k470k
R310k10k
R4100k100k
R5100k100k
R622r22
R7470k470k
R810k10k
R9100k100k
R1047k47k
R11100k100k
R122k22.2k
R134k74.7k
R142k22.2k
R156k86.8k
R166k86.8k
R1710k10k
R181m1M
R191m1M
R2010k10k
R211k1k
R22100k100k
R2310k10k
R2410k10k
R254k74.7k
R261m1M
Capacitors 15
C147n47n
C2470n470n
C347n47n
C4250p250p
C568n68n
C6100p100p
C7470n470n
C8470n470n
C910n10n
C1022n22n
C11100n100n
C1247n47n
C131u1u
C14100u100u
C1547u47u
Diodes 8
D1circuitCIRCUIT
D2DiodeDIODE
D3DiodeDIODE
D41N40041N4004
D5DiodeDIODE
D6DiodeDIODE
D71N4148***1N4148
D81N4148***1N4148
Transistors 3
Q12N39042N3904
Q22N39042N3904
Q32N39042N3904
ICs 1
IC1TL072*TL072
Potentiometers 2
TONE20KBB20kPotentiometer
VOLUME100KBB100kPotentiometer
Switches 1
SW1On/Off/OnON/OFF/ON

Other boards based on the Boss DS-1 Distortion