125B
OKKO Diablo+Verified
Based on the OKKO Diablo+· 5 other boards clone it
From the post
The Diablo is a modified BSIAB circuit and the Diablo+ version has an added boost at the output that's independent from the main overdrive circuit. I've laid it out for a 125B with top mounted jacks for a nice small footprint. Originals have a switch to run at 9 or 18 volts which I've left off-board so builders can choose their preferred voltage doubling method. Trim pots are extra controls, not for biasing, FYI.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 39 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×2 | 100Ω | 100 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 43K | 43k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| ×6 | 1M | 1M | read from the layout by eye | |
| Capacitors 11 | ||||
| ×2 | 470pF | 470p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×2 | 3.3nF | 3.3n | read from the layout by eye | |
| ×1 | 8.2nF | 8.2n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×2 | 1uF | 1u | drawn as film boxes; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 7 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; read from the layout by eye | |
| Q3 | J201 | J201 | JFET; read from the layout by eye | |
| Q4 | J201 | J201 | JFET; read from the layout by eye | |
| Q5 | J201 | J201 | JFET; read from the layout by eye | |
| Q6 | J201 | J201 | JFET; read from the layout by eye | |
| Q7 | J201 | J201 | JFET; read from the layout by eye | |
| Potentiometers 6 | ||||
| Body | B1M | B1M | Potentiometer | read from the layout by eye |
| Feed | B1M | B1M | Potentiometer | read from the layout by eye |
| Gain | A500K | A500k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Level | A10K | A10k | Potentiometer | read from the layout by eye |
| Level+ | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 5 | ||||
| Tone+ | 100K | 100k | read from the layout by eye | |
| Bass+ | 100K | 100k | read from the layout by eye | |
| Gain+ | 5K | 5k | read from the layout by eye | |
| Bass | 100K | 100k | read from the layout by eye | |
| Presence | 100K | 100k | labelled Pres on the board; read from the layout by eye | |
Other boards based on the OKKO Diablo+
- Diablo Guitar-Electronics.eu · €7.25
- Ojo Diablo PCB Guitar Mania · 1590BB · €11.90
- Deofol Overdrive PedalPCB · 125B · $12.00
- OKKO Diablo Boost+ Revolution Deux
- Hebridean Sheepylove · €10.00