Akashic Guitar effects PCB lookup
BASSGREENLEVELREDTREBLEBIAS

125B · 6 knobs

PCB Guitar Mania

Zap Device

Based on the EQD Zap Machine 'limited edition' Average, total 48 components

Category
Fuzz· Unique overdrive
Controls
Bass · Green · Level · Red · Treble · Bias
Difficulty
Moderate
Price
€11.90out 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

If you’re looking for a truly unique addition to your gear collection, you may want to check out the Zap Machine by Earthquake Devices. This limited-run pedal was released in 2010, with fewer than 25 made. That’s why, if you go to their website, you will run into a haunting sign:

THIS DEVICE IS NO LONGER IN PRODUCTION

But don’t worry; PCB Guitar Mania has got you covered! We bring you the 2v and updated version, where Jamie included two channels and incorporated the Treble circuit. There are only 350 of those in existence. So why go on a wild goose chase for an almost unobtainable PCB when you can proudly build it yourself?

Introduction

The EQD Limited-Edition Zap Machine V2 is a dual-channel hybrid device made of silicon and germanium that’s super touch-sensitive, meaning it’s really responsive to your playing style.

What’s great about it is that it has a wide range of sounds – you can go from a clean boost to a really intense fuzz just by adjusting the controls. You can even tweak the low-end frequencies to change the character of the sound, so it can behave like an overdrive, distortion, or fuzz box, depending on how you set it up.

Another cool thing is that it responds really well to your picking dynamics – something you don’t always get with other fuzz boxes. And if you need to clean up your sound, just adjust the volume knob on your guitar

Controls

Potentiometers

• Bass

• Green

• Level

• Red

• Treble

For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Zap Device – Building Docs

Zap Device – Drilling template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 41 rows

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RefValueNormalizedTypeNotes
Resistors 21
R147k47k
R2470k470k
R343k43k
R4484r484
R512k412.4k
R612k412.4k
R7100k100k
R81k1k
R91k1k
R1018K718.7k
R111k1k
R12470r470
R13220K220k
R142K22.2k
R1512k12k
R1647k47k
R1712k12k
R1812k12k
R191k1k
R201m1M
R21100r100
Capacitors 8
C24.7u4.7u
C84.7u4.7u
C154.7u4.7u
C1100pf100p
C610n10n
C91u1u
C101u1u
C116n86.8n
Diodes 2
D13mm3MM
D21n58171N5817
Transistors 3
Q12N50892N5089
Q22N39042N3904
Q32N13022N1302
Potentiometers 6
BASS100KBB100kPotentiometer
GREEN500KAA500kPotentiometer
LEVEL500KAA500kPotentiometer
RED500KAA500kPotentiometer
TREBLE500KAA500kPotentiometer
BIAS20K20kPotentiometer
LEDs 1
LED1LEDLED