125B · 4 knobs
From the vendor
Controls
• Level
• Drive
• Tone
• Color
Details
• Designed for a 125B enclosure with top-mounted jacks
The company, product and service names used in this web site are for comparative purposes only. All trademarks and registered trademarks are the property of their respective owners. This product is not manufactured or distributed by Boss, maker of the Boss OS-2 Overdrive/Distortion.
PedalPCB is in no way affiliated with Boss.
Schematic
The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 75 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 35 | ||||
| R1 | 10K | 10k | Resistor, 1/4W | |
| R2 | 1M | 1M | Resistor, 1/4W | |
| R3 | 10K | 10k | Resistor, 1/4W | |
| R4 | 220K | 220k | Resistor, 1/4W | |
| R5 | 4M7 | 4.7M | Resistor, 1/4W | |
| R6 | 1K2 | 1.2k | Resistor, 1/4W | |
| R7 | 100R | 100 | Resistor, 1/4W | |
| R8 | 12K | 12k | Resistor, 1/4W | |
| R9 | 1K | 1k | Resistor, 1/4W | |
| R10 | 2K2 | 2.2k | Resistor, 1/4W | |
| R11 | 6K8 | 6.8k | Resistor, 1/4W | |
| R12 | 12K | 12k | Resistor, 1/4W | |
| R13 | 8K2 | 8.2k | Resistor, 1/4W | |
| R14 | 6K8 | 6.8k | Resistor, 1/4W | |
| R15 | 1M | 1M | Resistor, 1/4W | |
| R16 | 10K | 10k | Resistor, 1/4W | |
| R17 | 20K | 20k | Resistor, 1/4W | |
| R18 | 100K | 100k | Resistor, 1/4W | |
| R19 | 1K | 1k | Resistor, 1/4W | |
| R20 | 20K | 20k | Resistor, 1/4W | |
| R21 | 100K | 100k | Resistor, 1/4W | |
| R22 | 150K | 150k | Resistor, 1/4W | |
| R23 | 22K | 22k | Resistor, 1/4W | |
| R24 | 10K | 10k | Resistor, 1/4W | |
| R25 | 10K | 10k | Resistor, 1/4W | |
| R26 | 10K | 10k | Resistor, 1/4W | |
| R27 | 100K | 100k | Resistor, 1/4W | |
| R28 | 1M | 1M | Resistor, 1/4W | |
| R29 | 1K | 1k | Resistor, 1/4W | |
| R30 | 4K7 | 4.7k | Resistor, 1/4W | |
| R31 | 33K | 33k | Resistor, 1/4W | |
| R32 | 100R | 100 | Resistor, 1/4W | |
| R100 | 10K | 10k | Resistor, 1/4W | |
| R101 | 10K | 10k | Resistor, 1/4W | |
| CLR | 4K7 | 4.7k | Resistor, 1/4W | * LED current limiting resistor |
| Capacitors 25 | ||||
| C1 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C3 | 100p | 100p | Ceramic capacitor | |
| C4 | 470n | 470n | Film capacitor, 7.2 x 5.0mm | |
| C5 | 2u2 | 2.2u | Electrolytic capacitor, 5mm | |
| C6 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C7 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C8 | 18n | 18n | Film capacitor, 7.2 x 2.5mm | |
| C9 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C10 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C11 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C12 | 820p | 820p | Ceramic capacitor | |
| C13 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C14 | 100p | 100p | Ceramic capacitor | |
| C15 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C16 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | 2) |
| C17 | 1n | 1n | Film capacitor, 7.2 x 2.5mm | |
| C18 | 10u | 10u | Electrolytic capacitor, 5mm | |
| C19 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C20 | 1u | 1u | Electrolytic capacitor, 5mm | |
| C21 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C22 | 47u | 47u | Electrolytic capacitor, 5mm | |
| C23 | 4u7 | 4.7u | Electrolytic capacitor, 5mm | |
| C100 | 100u | 100u | Electrolytic capacitor, 5mm | |
| C101 | 100u | 100u | Electrolytic capacitor, 5mm | |
| Diodes 6 | ||||
| D1 | 1SS133 | 1SS133 | Signal diode, DO-35 | |
| D2 | 1SS133 | 1SS133 | Signal diode, DO-35 | |
| D3 | 1SS133 | 1SS133 | Signal diode, DO-35 | |
| D4 | 1SS133 | 1SS133 | Signal diode, DO-35 | |
| D5 | 1SS133 | 1SS133 | Signal diode, DO-35 | |
| D100 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| Transistors 3 | ||||
| Q1 | J201 | J201 | JFET transistor, N-channel | |
| Q2 | 2N5088 | 2N5088 | BJT transistor, NPN TO-92 | |
| Q3 | 2N5088 | 2N5088 | BJT transistor, NPN TO-92 | |
| ICs 2 | ||||
| IC1 | JRC1458D | JRC1458D | Dual op-amp, DIP8 | |
| IC2 | JRC4558 | JRC4558 | Dual op-amp, DIP8 | |
| Potentiometers 4 | ||||
| LEVEL | A50K | A50k | 16mm right-angle PCB mount pot | |
| DRIVE | A250K | A250k | 16mm right-angle PCB mount pot, dual | * Dual-Gang Potentiometer |
| TONE | G20K | G20K | 16mm right-angle PCB mount pot | |
| COLOR | B20K | B20k | 16mm right-angle PCB mount pot | |
Other boards based on the Boss OS-2
- Boss OS-2 Overdrive/Distortion Dirtbox Layouts
- BOSS OS-2 Experimentalists Anonymous