1590B · 4 knobs
From the vendor
Yeah, this one is a lot of fun. Designed to sound like an amp on the edge of a nervous breakdown, it does the job superbly. Tweak the amount of stress those first tubes are virtually getting by pushing the pre-amp stage with a big fat boost, then crank the power tubes into saturation with the third stage fuzz level. You can get everything from 'hmm, needs a re-tube' to 'quick - someone pull the plug!'. I mean, it's a fuzz yeah? But the above is pretty accurate. The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. Doesn't include the buffer found in the original, but you can always add one - check the 'Other' section. 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 take a battery. Knobs are not included. Builds are only available with full kits including enclosures. Please choose appropriate knobs. Inspired by: NG-2 Difficulty: Medium PCB size: 50 x 44mm 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 50 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 22 | ||||
| R1 | 1M | 1M | ||
| R2 | 1M | 1M | ||
| R3 | 100K | 100k | ||
| R4 | 10K | 10k | ||
| R5 | 390R | 390 | ||
| R6 | 1K | 1k | ||
| R7 | 1K | 1k | ||
| R8 | 100K | 100k | ||
| R9 | 470K | 470k | ||
| R10 | 15K | 15k | ||
| R11 | 680R | 680 | ||
| R12 | 1K | 1k | ||
| R13 | 470K | 470k | ||
| R14 | 100K | 100k | ||
| R15 | 10K | 10k | ||
| R16 | 2K7 | 2.7k | ||
| R17 | 100K | 100k | ||
| R18 | 360R | 360 | ||
| R19 | 1K | 1k | ||
| R20 | 5K6 | 5.6k | ||
| R21 | 360R | 360 | ||
| R22 | 1K | 1k | ||
| Capacitors 15 | ||||
| C1 | 100n | 100n | ||
| C2 | 100n | 100n | ||
| C3 | 22u | 22u | elec | |
| C4 | 1n | 1n | ||
| C5 | 220n | 220n | ||
| C6 | 100n | 100n | ||
| C7 | 10n | 10n | ||
| C8 | 4u7 | 4.7u | elec | |
| C9 | 100n | 100n | ||
| C10 | 22n | 22n | ||
| C11 | 10u | 10u | elec | |
| C12 | 100n | 100n | ||
| C13 | 22n | 22n | ||
| C14 | 100u | 100u | elec | |
| C15 | 100u | 100u | elec | |
| Diodes 4 | ||||
| D1 | 1N34A | 1N34A | ||
| D2 | 1N34A | 1N34A | ||
| D3 | 1N4148 | 1N4148 | ||
| D4 | 1N4001 | 1N4001 | ||
| Transistors 5 | ||||
| Q1 | BC549C | BC549C | ||
| Q2 | BC549C | BC549C | ||
| Q3 | BC549C | BC549C | ||
| Q4 | BC549C | BC549C | ||
| Q5 | BC549C | BC549C | ||
| Potentiometers 4 | ||||
| DRV | 100KA | A100k | Potentiometer | |
| TONE | 100KB | B100k | Potentiometer | |
| SUS | 50KA | A50k | Potentiometer | |
| VOL | 100KB | B100k | Potentiometer | |