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GT-OD (GTOD)
- Category
- Overdrive
- Price
- €6.25in stock
From the vendor
The GT-OD is electrically almost identical to the ZW-44, but despite very slight differences it has a surprisingly different sound. Much more bass and low midrange, plus a denser drive makes it a great main distortion. It also works decently as a boost for a tube amplifier. The circuit is based on the MC33178 op-amp rarely found in guitar equipment.
PCB. Dimensions: 43mm x 34mm
Files to download:
•
GT-OD ENG.pdf
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 35 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 16 | ||||
| R12 | 470R | 470 | ||
| R7 | 4k7 | 4.7k | ||
| R14 | 4k7 | 4.7k | ||
| R1 | 10k | 10k | ||
| R9 | 10k | 10k | ||
| R13 | 10k | 10k | ||
| R15 | 10k | 10k | ||
| R5 | 22k | 22k | ||
| R2 | 100k | 100k | ||
| R6 | 100k | 100k | ||
| R0 | 1M | 1M | ||
| R3 | 1M8 | 1.8M | ||
| R4 | 2M2 | 2.2M | ||
| R8 | 33k | 33k | C9 10u | |
| R10 | 33k | 33k | C11 10n | |
| R11 | 33k | 33k | C12 3u3 | |
| Capacitors 10 | ||||
| C7 | 120p | 120p | ||
| C4 | 3n3 | 3.3n | ||
| C11 | 10n | 10n | ||
| C5 | 15n | 15n | ||
| C3 | 47n | 47n | ||
| C6 | 47n | 47n | ||
| C12 | 3u3 | 3.3u | ||
| C2 | 4u7 | 4.7u | ||
| C9 | 10u | 10u | ||
| C1 | 100u | 100u | ||
| Diodes 4 | ||||
| D1 | 1N400X | 1N400X | ||
| D2 | 1N914 | 1N914 | ||
| D3 | 1N914 | 1N914 | ||
| D4 | 1N914 | 1N914 | ||
| Transistors 1 | ||||
| Q1 | MPSA14 | MPSA14 | ||
| ICs 1 | ||||
| U1 | MC33178 | MC33178 | ||
| Potentiometers 3 | ||||
| RV1 | A1M D4 1N914 | A1M D4 1N914 | ||
| RV2 | B20k Q1 MPSA14 | B20K Q1 MPSA14 | ||
| RV3 | B10k U1 MC33178 | B10K U1 MC33178 | ||