Akashic Guitar effects circuit lookup
INPUTOSCTONELEVELTANTRUMQ1 FLIPQ2 FLIPWAIL

1590BB · 8 knobs

Cryptid Effects

The Everlasting Tantrum v2

Based on the DOD Devi Ever Grindhaus

Category
Fuzz
Controls
Input · Osc · Tone · Level · Tantrum · Q1 Flip · Q2 Flip · Wail
Price
see vendor
Tags
verified, gerbers, faceplate, CC BY-NC-SA 4.0

From the vendor

The Everlasting Tantrum is my take on an unreleased fuzz pedal that was designed by DOD and Devi Ever. It was essentially a Hyperion followed by a Big Muff style tone stack and then a booster stage afterwards. I've augmented it with a switch to bypass the tone stack, another switch to allow you to choose between three different Devi Ever fuzzes, and an oscillation potentiometer that lets you introduce feedback into the fuzz circuit itself.

v2 moves the pedal to a larger 1590BB enclosure with top mounted jacks and adds two new switches, Q1 Flip and Q2 Flip, that reverse the collector and emitter of the first two transistors. Flipping them gives a much smoother sounding fuzz with a lot less gain.

You can see the build report here.

Built

The finished The Everlasting Tantrum v2

Schematic

Schematic of The Everlasting Tantrum v2

Drawn by Cryptid Effects, CC BY-NC-SA 4.0. Gerbers and faceplate on GitHub.

Parts list 36 rows

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RefValueNormalizedTypeNotes
Resistors 11
R11k1k
R22M22.2M
R310k10k
R42M22.2M
R510k10k
R6150k150k
R72M22.2M
R810k10k
R939k39kBig Muff Tone Stack
R1039k39kBig Muff Tone Stack
R1004k74.7kCurrent limiting resistor, choose to taste
Capacitors 11
C1100nF100nFilm
C2100nF100nFilm
C3100nF100nFilm
C4100nF100nFilm
C5100nF100nFilm
C6100nF100nFilm
C7100nF100nFilm
C84nF4nFilm, Big Muff Tone Stack
C910nF10nFilm, Big Muff Tone Stack
C100100uF100uElectrolytic
C101100nF100nFilm
Diodes 1
D1001N58171N5817
Transistors 4
Q1MPSA18MPSA18
Q2MPSA18MPSA18
Q32N2907A2N2907A
Q4MPSA18MPSA18
Potentiometers 4
InputB100kB100kPotentiometer16mm right angle pot
OscillationA10kA10kPotentiometer16mm right angle pot
ToneB100kB100kPotentiometer16mm right angle pot
LevelA100kA100kPotentiometer16mm right angle pot
Switches 4
Fuzz ModeSPDTSPDTSwitchOn / Off / On
Tone BypassDPDTDPDTSwitchOn / On
Q1 OrientationDPDTDPDTSwitchOn / On
Q2 OrientationDPDTDPDTSwitchOn / On
LEDs 1
D101LED 3mmLED 3MMchoose your poison, 5mm works as well.