Enclosure not stated · 3 knobs
MXR ZW-44 Berzerker OverdriveVerified
Based on the MXR ZW-44 Berzerker Overdrive
From the post
Got a request for Zakk Wylde's signature overdrive from MXR. It's essentially Boss SD-1 Super Overdrive without the buffers. Original units have MC33178P, but socket and experiment with dual op-amps. You can use right angle PCB pots to mount them on the board from the solder-side.
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 26 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 1.8M left of the 100K beside the 4001 diode: printed clearly, unusual value
- Tone pot B20k in the legend: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×3 | 10K | 10k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×1 | 1.8M | 1.8M | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 4.7K | 4.7k | read from the layout by eye | |
| ×3 | 33K | 33k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| Capacitors 8 | ||||
| ×4 | 47nF | 47n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 18nF | 18n | read from the layout by eye | |
| ×1 | 120pF | 120p | read from the layout by eye | |
| ×1 | 3.3uF | 3.3u | electrolytic; read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 4 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4148 | 1N4148 | read from the layout by eye | |
| Transistors 1 | ||||
| Q1 | MPSA18 | MPSA18 | read from the layout by eye | |
| ICs 1 | ||||
| ×1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | B1M | B1M | Potentiometer | read from the layout by eye |
| Tone | B20K | B20k | Potentiometer | read from the layout by eye |
| Output | B10K | B10k | Potentiometer | read from the layout by eye |