Walrus Audio Silt Fuzz
A tube fuzz — and not the gimmick kind. The Walrus Audio Silt Harmonic Fuzz makes its channel debut. Welcome back to Edge of Breakup.
In this episode the Walrus Audio Silt Harmonic Tube Fuzz takes center stage — featuring the Wide Sky Guitars Tawa with Curtis Novak Humbuckers, into the Benson Amps Monarch 2x12" via the Boss Waza Tube Amp Expander.
The Silt is a collaboration between Walrus Audio and Jim Hagerman of Hagerman Amplification — a genuine tube amplification expert. The collaboration is what makes the Silt work: putting a 12AU7 preamp tube inside a fuzz pedal is straightforward. Getting it to sound right is not. The 12AU7 drives the core fuzz stage, adding the bone-rattling warmth, genuine grit, and harmonic complexity that purely solid-state fuzz circuits approach but can't replicate — the difference is in the overtones that appear at the top of sustained notes and chords, where the tube's behavior diverges from transistors in a distinctly musical direction.
Five controls: Volume, Gain (input to fuzz stage, from subtle crunch to full-throttle fuzz), Tone, Contour 3-way switch (pre-tube EQ stage — Highpass for tighter/sparkly, Flat for full response, Lowpass for warm/bassy), and the Harmonic footswitch. Running at 9V is the standard operation; 12V unlocks an extra gain boost that pushes the fuzz to a deeper, more electrified character.
The Harmonic Mode is the second voice. Rather than being a separate circuit, it acts as a frequency doubler placed before the drive stage — the doubled signal hits the tube fuzz input alongside the fundamental, producing crispy, octave-like overtones in the harmonics. This isn't a clean octave generator: it's an octave-flavored texture that sounds best with the guitar's tone knob rolled back, which is demonstrated in depth from 12:26 onward. The Contour and Tone controls remain active in Harmonic mode, giving a wide range of available character from the same footswitch.
🎛️ Walrus Audio Silt: https://www.walrusaudio.com/products/silt-harmonic-fuzz
🎸 Wide Sky Guitars: https://www.wideskyguitars.com
🎸 Curtis Novak Pickups: https://www.curtisnovak.com
🔊 Benson Amps: https://www.bensonamps.com/guitar-amplifiers
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🎸 Wide Sky Guitars Tawa | Curtis Novak Humbuckers
🎛️ Walrus Audio Silt Harmonic Tube Fuzz | 12AU7 | Harmonic Mode | Contour HP/Flat/LP | 9-12V | Jim Hagerman Collab
🔊 Benson Amps Monarch 2x12" | Boss Waza TAE
Recording: Universal Audio Apollo x4 | Lauten Audio LS-208 | Royer R10 & R121 | Sennheiser E906 | Ableton Live 11
