Hand-Soldered 3-Germanium “Tone Bender Professional MKII” Style Fuzz
This build targets the classic Sola Sound Tone Bender Professional MKII topology and feel: a two-knob layout (Level / Attack) driving the iconic 60s British germanium fuzz character.
Lineage, Year Range, and Version Notes (Objective)
- Era of the original design: Documentation and period references place the Professional MKII’s marketed/produced era around 1966 (advertised by at least Nov. 1966) through early 1968, with known component variations across runs.
- About “batch accuracy”: Original MKII units were not a single fixed recipe—board layouts, part values, and OEM branding varied. From exterior photos alone, it is not defensible to assign one exact vintage batch/board node.
Documented Use Context (Examples with Source Support)
- The Tone Bender MKII is notably associated with Jimmy Page’s early recorded tones.
- It is also cited in relation to the guitar work on Donovan’s 1968 track “Hurdy Gurdy Man” (Alan Parker).
Tonal Target
- Aggressive, forward mids with strong cut—excellent for pushing an already-edgy British amp.
- Structured, vocal single-note sustain with a gritty, biting edge rather than a scooped “wall of fuzz.”
- Highly interactive dynamics—a key part of the MKII experience is riding your guitar volume for clean-up and gain staging.
Controls
- LEVEL: Output volume (also determines how hard you hit the next stage/amp).
- ATTACK: Overall gain and fuzz density.
Handwired Build Focus
- Hand-soldered assembly with critical-node verification for long-term reliability.
- For the most authentic MKII feel, production should emphasize germanium selection/matching and bias calibration—these are the make-or-break factors for consistency in a germanium fuzz.
We shipped everywhere.
9V DC, center-negative polarity (negative ground)
Because these are handmade, we don’t accept returns or exchanges unless there’s a quality issue.
| Condition | Brand New (New) Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more |
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