Enclosure not stated · 2 knobs
Boss OD-1 OverdriveVerified
Based on the Boss OD-1· 10 other boards clone it
From the post
Here's the Boss OD-1–the first of the tube screamer-type overdrives (yes, the first TS wasn't an Ibanez). It features asymmetrical clipping diodes (where a stock TS has symmetrical clipping) which gives it a thicker, more edgy sound. Initial versions of the circuit used a quad opamp, using 2 of the opamps as in the input/output buffers, but this was later replaced by the more common transistor buffers and a dual opamp to save cost and use more readily available parts back in the late 70s/early 80s.
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 20 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×5 | 10K | 10k | read from the layout by eye | |
| ×3 | 33K | 33k | read from the layout by eye | |
| ×3 | 4.7K | 4.7k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×3 | 47nF | 47n | read from the layout by eye | |
| ×1 | 18nF | 18n | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×3 | 1N4148 | 1N4148 | read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N3904 | 2N3904 | NPN silicon (2N3904, 2N5088, BC550C, etc.); read from the layout by eye | |
| Q2 | 2N3904 | 2N3904 | NPN silicon (2N3904, 2N5088, BC550C, etc.); read from the layout by eye | |
| ICs 1 | ||||
| ×1 | 4558 | 4558 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Drive | B1M | B1M | Potentiometer | 1M Lin; read from the layout by eye |
| Level | B10K | B10k | Potentiometer | 10K Lin; read from the layout by eye |
Other boards based on the Boss OD-1
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- Parhelion Aion FX · 1590B · $12.50
- Boss OD-1 Effects Layouts (blog) · 1590B
- BOSS OD-1 Experimentalists Anonymous
- Li'l yellow od Moody Sounds · kr650.00
- Yellow Overdrive Moody Sounds · kr895.00
- Oddity Overdrive PedalPCB · 125B · $8.00
- OD77 - The primordial overdrive Sheepylove · €10.00
- Boss OD1 Tagboard Effects
- OD-1 Overdrive Tayda Electronics (DHEA) · $6.99