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Base pedal: EHX Op-Amp Big Muff
Based on the EHX Op-Amp Big Muff, a 1978 redesign using op-amps instead of transistors with harder-edged fuzz tone. Includes tone bypass switch and configurable tone control with optional Big Muff-style clipping modification.
Component Name | Type | Default Part | Qty |
|---|---|---|---|
| 47R | RESISTOR | MFR-25-47R | 2 |
| 1K2 | RESISTOR | MFR-25-1K2 | 1 |
| 4K7 | RESISTOR | 1 | |
| 5K6 | RESISTOR | MFR-25-5K6 | 1 |
| 8K2 | RESISTOR | MFR-25-8K2 | 1 |
| 10K | RESISTOR | 1 | |
| 47K | RESISTOR | 3 | |
| 56K | RESISTOR | 1 | |
| 62K | RESISTOR | MFR-25-62K | 1 |
| 100K | RESISTOR | 1 | |
| 220K | RESISTOR | 2 | |
| 330K | RESISTOR | 1 | |
| 470K | RESISTOR | 1 | |
| 560K | RESISTOR | 1 | |
| 820K | RESISTOR | MFR-25-820K | 1 |
| 1M | RESISTOR | 1 | |
| 2M2 | RESISTOR | 1 | |
| 330p MLCC | CAPACITOR | MLCC-330P-5MM | 1 |
| 4n7 Film | CAPACITOR | 1 | |
| 10n Film | CAPACITOR | 1 | |
| 100n Film | CAPACITOR | 2 | |
| 120n Film | CAPACITOR | FILM-120N | 1 |
| 150n Film | CAPACITOR | 2 | |
| 220n Film | CAPACITOR | 1 | |
| 1u Electrolytic | CAPACITOR | ELECTRO-16V-1U | 1 |
| 1u Film | CAPACITOR | 1 | |
| 10u Electrolytic | CAPACITOR | ELECTRO-16V-10U | 3 |
| 100u Electrolytic | CAPACITOR | ELECTRO-16V-100U | 1 |
| LM741 | IC | LM741 | 1 |
| RC4558D | IC | RC4558D | 1 |
| 1N4002 | DIODE | 1N4002 | 1 |
| 1N914 | DIODE | 1N914 | 6 |
| 5mm Red | LED | 1 | |
| B10K 16mm | POTENTIOMETER | 2 | |
| A100K 16mm | POTENTIOMETER | 1 | |
| SPDT ON/ON | SWITCH | 1 |