125B · 3 knobs
GIG BUFF v1.3
Based on the Electro-Harmonix Big Muff Pi 2· 8 other boards clone it
- Category
- Fuzz
- Price
- £10.00out of stock
From the vendor
FIRST BATCH (v1.2 boards) SOLD OUT - THANKYOU
SECOND BATCH (v1.3 boards) SOLD OUT - THANKYOU
THIRD BATCH (v1.3 boards) - SOLD OUT - THANKYOU
Based on the schematic snippets from videos, boxes etc. No affiliation here just fun for DIYers. Full Build document provided.
Note: This has NOT been fully traced and/or verified from any released version, but sounds "right" on the breadboard, PCB has been validated and follows the important parts of the audio schematics posted online. Some parts values might vary upon more detailed circuit analysis, and will be easy to adjust. The sound is reproducing the characteristics shown in the video demos online, to my ears.
PCB colour might vary as per my whim. The first fews batches will be green in the interest of fabrication speed, as this is the most common and therefore quickest production colour. Fits 125b enclosure with top mount jacks
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 53 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 18 | ||||
| R1 | 270k | 270k | ||
| R2 | 270k | 270k | ||
| R3 | 4.7k | 4.7k | ||
| R8 | 4.7k | 4.7k | ||
| R11 | 4.7k | 4.7k | ||
| R14 | 4.7k | 4.7k | ||
| R5 | 470k | 470k | ||
| R10 | 470k | 470k | ||
| R13 | 470k | 470k | ||
| R17 | 470k | 470k | ||
| R18 | 470k | 470k | ||
| R21 | 470k | 470k | ||
| R9 | 47k | 47k | ||
| R12 | 47k | 47k | ||
| R15 | 27k | 27k | ||
| R16 | 27k | 27k | ||
| R4 | 22r | 22 | ||
| R19 | 100k | 100k | ||
| Capacitors 21 | ||||
| C1 | 100nF | 100n | ||
| C2 | 100nF | 100n | ||
| C21 | 100nF | 100n | ||
| C22 | 100nF | 100n | ||
| C24 | 100nF | 100n | ||
| C3 | 470pF | 470p | ||
| C12 | 470pF | 470p | ||
| C16 | 470pF | 470p | ||
| C4 | 33pF | 33p | ||
| C13 | 33pF | 33p | ||
| C17 | 33pF | 33p | ||
| C6 | 4.7uF | 4.7u | ||
| C11 | 4.7uF | 4.7u | ||
| C15 | 4.7uF | 4.7u | ||
| C23 | 4.7uF | 4.7u | ||
| C10 | 4.7nF | 4.7n | ||
| C14 | 4.7nF | 4.7n | ||
| C18 | 4.7nF | 4.7n | ||
| C7 | 100uF | 100u | ||
| C19 | 3.3nF | 3.3n | ||
| C20 | 10nF | 10n | ||
| Diodes 7 | ||||
| D2 | 1n4148 | 1N4148 | ||
| D3 | 1n4148 | 1N4148 | ||
| D4 | 1n4148 | 1N4148 | ||
| D5 | 1n4148 | 1N4148 | ||
| D6 | 1n4148 | 1N4148 | ||
| D7 | 1n4148 | 1N4148 | ||
| D1 | 1n5817 | 1N5817 | ||
| ICs 2 | ||||
| U1 | 4558 | 4558 | ||
| U2 | 4558 | 4558 | ||
| Potentiometers 3 | ||||
| SUSTAIN | B100K | B100k | Potentiometer | |
| TONE | B100K | B100k | Potentiometer | |
| VOLUME | B100K | B100k | Potentiometer | |
| Trimmers 1 | ||||
| LED Brightness | B10K | B10k | Trimmer | |
| LEDs 1 | ||||
| D8 | 5mm LED | 5MM LED | ||
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