1590B · 2 knobs
Fuzz Dog· Roar
Roar Drive
Based on the EarthQuaker Devices Bellows· 7 other boards clone it
- Category
- Fuzz· OD/Dist/Preamp
- Difficulty
- Easy
- Price
- £32.40
- Tags
- fuzz
From the vendor
Now that's a nifty parts count for a very versatile drive. Designed to produce a vast range of drive tones. Keep the gain down low for light tube-like break-up, wind it up a bit for some crunch, or whack it all the way for saturated fuzz. There's got to be some magic in the FET clipping for it to work this well. Board-mounted pots for minimal wiring and easy mounting in the enclosure. 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 can take a battery if you want one. Be aware that the footswitch will be 22mm closer to your knobs that with the battery-free option. Knobs are not included. Inspired by: Bellows Difficulty: Easy PCB size: 50 x 20mm Knobs required: 2 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 14 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 4 | ||||
| R1 | 10K | 10k | ||
| R2 | 10K | 10k | ||
| R3 | 22K | 22k | ||
| R4 | 200R | 200 | ||
| Capacitors 5 | ||||
| C1 | 22N | 22n | ||
| C2 | 1n | 1n | ||
| C3 | 68n | 68n | ||
| C4 | 100u | 100u | Electrolytic capacitor | |
| C5 | 100u | 100u | Electrolytic capacitor | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | MPSA13 | MPSA13 | ||
| Q2 | 2N5457* | 2N5457 | ||
| Potentiometers 2 | ||||
| GAIN | 250KB | B250k | Potentiometer | |
| VOL | 100KB | B100k | Potentiometer | |
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