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VOICEFUZZLEVELTREBLE

125B · 4 knobs

PCB Guitar Mania

Terminal Device

Based on the EQD Terminal Fuzz· 3 other boards clone it

Category
Fuzz· Unique Fuzz
Controls
Voice · Fuzz · Level · Treble
Difficulty
Easy
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:

Terminal Device is a highly modified Shin-Ei Companion Fuzz, based on the Earthquaker Devices Terminal Fuzz. The unique buzzy sound of the original pedal was awesome, but the modifications make this design go three steps further: the addition of a pot at input that regulates the amount of signal being fed to the circuit, a controllable tone stack, and an output gain stage after the volume control to get the fuzz above unity volume.

Introduction

Terminal Device is inspired by the Earthquaker Devices Terminal Fuzz, a highly modified Shin-Ei Companion Fuzz. This board offers both the unique buzzy sound of an old JAX fuzz and modern features that allow more in the way of control.

The 60s and 70s were the golden time for many quite distinctive fuzzes, and I’m not talking only about big names such as Fuzz Face and Tone Bende. If you dig a little, you will find that there were many unique gems, now discontinued.

Terminal Device is based on one of those rare pedals. The exceptional buzzy sound of the original board is fantastic. Still, the modifications make this design go three steps further by adding a pot at input that regulates the amount of signal being fed to the circuit, a controllable tone stack, and an output gain stage after the volume control to get the fuzz above unity volume.

Controls

Potentiometers

• Treble

• Voice

• Fuzz

• Level

For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.

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

Terminal Device – Building Docs

Terminal 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 31 rows

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RefValueNormalizedTypeNotes
Resistors 13
R12m20.0022
R222k22k
R31m1M
R447k47k
R510k10k
R615k15k
R747k47k
R8470k470k
R9470r470
R1010k10k
R11100k100k
R124k74.7k
R131m1M
Capacitors 9
C1100n100n
C21n1n
C42n22.2n
C53n33.3n
C61n1n
C7100n100n
C810u10u
C910u10u
C10100u100u
Diodes 2
D11n58171N5817
D23mm3MM
Transistors 3
Q12N39042N3904
Q22N23692N2369
Q32N23692N2369
Potentiometers 4
VOICE10KBB10kPotentiometer
FUZZ100KBB100kPotentiometer
LEVEL50KBB50kPotentiometer
TREBLE50KBB50kPotentiometer

Other boards based on the EQD Terminal Fuzz