Enclosure not stated · 2 knobs
From the vendor
The Italian-made Vox Tone Bender of 1966-68: a two-transistor germanium PNP fuzz with a 47K feedback resistor from the Attack pot to the first transistor's base, in the Fuzz Face family. The quoted review describes it as a raspy, treble-heavy fuzz, between a Rangemaster and a Fuzz Face, with a little less fuzz than an early Fuzz Face.
The 1M input pull-down resistor and the 47uF supply capacitor (drawn in blue) are optional improvements, not part of the original.
Schematic
The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.
Parts list 14 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| R1 | 1M | 1M | optional input pull-down (blue); read from the schematic by eye | |
| R2 | 10K | 10k | Q1 collector; read from the schematic by eye | |
| R3 | 1K | 1k | read from the schematic by eye | |
| R4 | 8.2K | 8.2k | Q2 collector; read from the schematic by eye | |
| R5 | 47K | 47k | feedback to Q1 base; read from the schematic by eye | |
| R6 | 820 | 820 | read from the schematic by eye | |
| Capacitors 4 | ||||
| C1 | 150n | 150n | input; read from the schematic by eye | |
| C2 | 47u | 47u | optional supply filter (blue), electrolytic; read from the schematic by eye | |
| C3 | 15u | 15u | electrolytic, on the Attack pot; read from the schematic by eye | |
| C4 | 4.7n | 4.7n | output; read from the schematic by eye | |
| Transistors 2 | ||||
| Q1 | SFT337 | SFT337 | germanium PNP; read from the schematic by eye | |
| Q2 | SFT363E | SFT363E | germanium PNP; or OC76; read from the schematic by eye | |
| Potentiometers 2 | ||||
| Attack | B1K | B1k | Potentiometer | read from the schematic by eye |
| Level | A50K | A50k | Potentiometer | read from the schematic by eye |
Other boards based on the Vox Tone Bender
- Vox Tone Bender Experimentalists Anonymous
- Vox Tone Bender Tagboard Effects
- VOX Tone Bender (JEN Fuzz) turretboard.org