1590B · 3 knobs
Fuzz Dog· sandofgod
Sand of God
Based on the OKKO Holy Grit· 2 other boards clone it
- Category
- Fuzz
- Difficulty
- Medium
- Price
- £38.40
- Tags
- fuzz
From the vendor
OK. This one here is an absolute gem. There are so many different textures available from this box you'd swear it was ten different pedals.
Kinda sorta Tone Bender MkII Topology with all sorts of bells and whistles going on.
Up front you have a switchable buffer section. Flip it on to place this anywhere in your chain. Turn it off if you're placing it up front and want that classic guitar/fuzz interaction and silky smooth clean-up with your volume pot.
The fuzzy section has - guess what? - a fuzz control. Nice to see they've gone for a reverse log here - it's an absolute must. There's a three-way toggle to switch between three very distinct bias settings for Q3. There are factory settings for these detailed in the build doc, but there's nothing stopping you going more or less extreme to get your own flavours. Honestly, the original specs offer more than enough variation. There's also a BASS pot to increase/limit the frequency range hitting Q2. This makes a big difference to the fuzz texture. Chuck in the TREBle bleed control to tame everything for bright amps and it adds up to a solid winner.
The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.
If you want the PCB without parts there's a link for that at the bottom of the page.
Partial kit: PCB, all board-mounted components, pots.
Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.
Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.
Builds are only available with full kits including enclosures. Please choose appropriate knobs.
Inspired by: Holy Grit
Difficulty: Medium
PCB size: 50 x 50mm
Knobs required: 4
Enclosure: 1590B
Direct-Connect compatible (4-way)
Download the INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 38 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 16 | ||||
| R1 | 47K | 47k | ||
| R2 | 1M | 1M | ||
| R3 | 1M | 1M | ||
| R4 | 1M | 1M | ||
| R5 | 10K | 10k | ||
| R6 | 15K | 15k | ||
| R7 | 2K2 | 2.2k | ||
| R8 | 100K | 100k | ||
| R9 | 47K | 47k | ||
| R10 | 22K | 22k | ||
| R11 | 1K | 1k | ||
| R12 | 10K | 10k | ||
| R13 | 100R | 100 | ||
| R14 | 1K | 1k | ||
| R15 | 100K | 100k | ||
| R16 | 51R | 51 | ||
| Capacitors 11 | ||||
| C1 | 100n | 100n | ||
| C2 | 10u | 10u | Electrolytic capacitor | |
| C3 | 2u2 | 2.2u | Electrolytic capacitor | |
| C4 | 4n7 | 4.7n | ||
| C5 | 6n8 | 6.8n | ||
| C6 | 47p | 47p | ||
| C7 | 220p | 220p | ||
| C8 | 100n | 100n | ||
| C9 | 15n | 15n | ||
| C10 | 100u | 100u | Electrolytic capacitor | |
| C11 | 22u | 22u | Electrolytic capacitor | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| Transistors 4 | ||||
| Q1 | BC182B | BC182B | ||
| Q2 | BC107A | BC107A | ||
| Q3 | 2N3053 | 2N3053 | ||
| Q4 | BC182B | BC182B | ||
| Potentiometers 3 | ||||
| FUZZ | 1KC | C1k | Potentiometer | |
| TREB | 10KB | B10k | Potentiometer | |
| VOL | 100KA | A100k | Potentiometer | |
| Trimmers 3 | ||||
| BOT | 20K | 20k | ||
| MID | 20K | 20k | ||
| TOP | 20K | 20k | ||
Other boards based on the OKKO Holy Grit
- OKKO Holy Grit Dirtbox Layouts
- Sandblaster Fuzz PedalPCB · 125B · $12.00