Tube-Driven Harmonic Fuzz with Blendable Octave and Clean Signal
The Walrus Audio Silt Harmonic Fuzz is a cutting-edge fuzz pedal that merges vintage character with modern flexibility. What sets it apart? A real 12AU7 preamp tube running at high voltage inside the pedal—a rare feature that delivers unmistakable warmth, bloom, and harmonic complexity. Whether you’re chasing classic fuzzy sustain or bold, experimental textures, the Silt offers a dynamic response and tonal depth that only real tube saturation can provide.
Tube-Driven Saturation at 250V
At the core of the Silt is a genuine 12AU7 tube, powered at a true high voltage of 250V to unlock the rich dynamics and harmonic content that guitarists crave from vintage tube gear. This isn’t a cosmetic tube glowing for show—this is the real deal. The tube acts as a harmonic enhancer in the gain stage, infusing your tone with warmth, responsiveness, and touch-sensitive fuzz that reacts to your playing style.
Blendable Octave and Clean Signal for Total Tonal Control
The Silt isn’t just about vintage tone—it’s also about versatility. With independent controls for octave and clean blend, you can sculpt your fuzz tone with precision:
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Octave Control – Mix in upper-octave harmonic content for everything from subtle shimmer to searing synth-like textures.
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Clean Blend – Retain note clarity and low-end punch by blending your dry signal with the fuzz. Perfect for bass players or guitarists looking to maintain definition in the mix.
This combination allows for nuanced layering and a wide spectrum of sonic options—from tight and articulate to chaotic and wild.
Intuitive Layout, Expressive Tone
With simple, performance-ready controls, the Silt keeps the creativity flowing:
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Volume – Sets the overall output level
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Fuzz – Adjusts the amount of distortion
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Tone – Shapes the brightness and top-end character
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Octave – Dials in the intensity of the upper harmonic effect
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Blend – Mixes your clean signal with the affected sound
Each control responds musically, making it easy to find your sweet spot whether you’re recording, gigging, or experimenting in the practice room.
Built for the Stage and Studio
The Silt is housed in a road-tough enclosure with top-mounted jacks for space-saving pedalboard placement. Powered via standard 9V DC (center negative, 300mA minimum), it’s easy to integrate into any rig. And with true bypass switching, your tone stays pure when the effect is off.
Key Features
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Real 12AU7 preamp tube, powered at 250V for authentic tube saturation
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Blendable octave fuzz circuit for layered harmonic textures
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Clean signal blend for added clarity, dynamics, and low-end retention
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Five responsive controls: Volume, Fuzz, Tone, Octave, Blend
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Top-mounted input/output jacks for streamlined pedalboard setup
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True bypass for uncolored signal path when disengaged
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Standard 9V DC power (300mA minimum, center negative)
Who It’s For
The Walrus Audio Silt Harmonic Fuzz is ideal for players looking to explore the richness of tube-driven fuzz without sacrificing flexibility. From vintage enthusiasts to modern tone sculptors, it’s a perfect match for anyone who wants fuzz with dynamic response, harmonic depth, and customizable texture. Guitarists and bassists alike will appreciate its blend controls and articulate voicing.
BOOM!
