1590B · 5 knobs
From the vendor
There are many pedals out there that try to recreate the tone of a Marshall amp, and lots of them do it well. This is one of them.
Relying on op-amp ooomph rather than the FET gain stages of many others, this is a simpler build with no biasing to worry about. It still packs a punch regardless.
Where this bad lad does shine is the three-band tone stack. Very useful. Cut those mids and chug 'til Tuesday.
Five knobs of fun with an optional clipping selection switch to add a touch more versatility.
The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. Pot spacing is very tight (17.5mm), so you'll need small knobs. 1900H fit well.
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 enclosure and vertical-mount pots. Please choose appropriate knobs.
Inspired by: Guv'nor
Difficulty: Medium
PCB size: 50 x 46mm
Knobs required: 5
Enclosure: 1590B
Direct-Connect compatible (4-way)
Download INSTRUCTION PDF
Here's the previous version
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 41 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| R1 | 2M2 | 2.2M | ||
| R2 | 1M | 1M | ||
| R3 | 2K2 | 2.2k | ||
| R4 | 10K | 10k | ||
| R5 | 680K | 680k | ||
| R6 | 1K | 1k | ||
| R7 | 1K5 | 1.5k | ||
| R8 | 680R | 680 | ||
| R9 | 680R | 680 | ||
| R10 | 100R | 100 | ||
| R11 | 22K | 22k | ||
| R12 | 47K | 47k | ||
| R13 | 47K | 47k | ||
| Capacitors 15 | ||||
| C1 | 10n | 10n | ||
| C2 | 100p | 100p | ||
| C3 | 100n | 100n | ||
| C4 | 220n | 220n | ||
| C5 | 100n | 100n | ||
| C6 | 220p | 220p | ||
| C7 | 220n | 220n | ||
| C8 | 100n | 100n | ||
| C9 | 4n7 | 4.7n | ||
| C10 | 10n | 10n | ||
| C11 | 220n | 220n | ||
| C12 | 470p | 470p | ||
| C13 | 68n | 68n | ||
| C14 | 100u | 100u | elec | |
| C15 | 10u | 10u | elec | |
| Diodes 7 | ||||
| D2 | 1N4148 | 1N4148 | ||
| D3 | 1N4148 | 1N4148 | ||
| D4 | 1N4148 | 1N4148 | ||
| D5 | 1N4148 | 1N4148 | ||
| D6 | 3MM | 3MM | ||
| D7 | 3MM | 3MM | ||
| D1 | 1N5817 | 1N5817 | ||
| ICs 1 | ||||
| IC1 | TL072 | TL072 | ||
| Potentiometers 5 | ||||
| GAIN | 100KB | B100k | Potentiometer | |
| LEVEL | 100KB | B100k | Potentiometer | |
| TREB | 10KB | B10k | Potentiometer | |
| MID | 10KA | A10k | Potentiometer | |
| BASS | 10KA | A10k | Potentiometer | |