Frequency Distiller: Powerful Tone Shaping
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The Frequency Distiller is a dual state-variable filter pedal for bass, inspired by the legendary Alembic Super Filter (SF-2), and built for modern players. Housed in a compact, rugged enclosure, it delivers a wide range of tone-shaping possibilities—from deep sculpting to subtle contouring—whether you're playing bass or guitar.
Use Channel A on its own with a clean signal blend, or activate Channel B in parallel and blend both filters along with your clean tone. The result is a highly customizable and musical EQ experience, ideal for studio, stage, or experimental setups.
Features:
Super-flexible tone shaping for bass or guitar
Four selectable filter types per channel: low-pass, high-pass, band-pass, and notch
Variable cutoff/center frequency: 40 Hz to 6 kHz
Adjustable resonance (Q): 0.5 (wide) to 5.5 (narrow)
Internal input gain selector: 0 dB, +10 dB, +20 dB
True bypass (relay-based) with long-press mute function
High-quality jacks, switches, and potentiometers
9V external power supply, boosted internally to 26V for massive headroom
LED indicator
Rugged Hammond 1590BB aluminum enclosure
Controls:
A | A+B Switch: Filter mode select switch that selects single-filter (A) or dual-filter (A+B) mode. In A mode, only Channel A controls are active; in A+B mode, both sets of controls are active.
Clean Mix (A) | Input Level (A+B): In A mode, adjusts the amount of clean signal blended with Channel A's filter output. In A+B mode, adjusts the signal level fed into Channels A and B.
Clean Mix (A+B): In A+B mode, adjusts the level of clean signal blended with filter outputs from Channels A and B.
Gain: Controls the output level of the active filter channel.
Frequency: Sets the center or cutoff frequency for the selected filter type.
Resonance: Adjusts how sharply the filter attenuates frequencies outside its passband (sometimes called “quality factor” or Q). Setting ranges from wide (0.5) to a narrow (5.5).
Filter Type: Selects the filter type: low-pass, high-pass, band-pass, or notch.
Footswitch: Tap to toggle between bypass and active. Hold to mute the output.
Signal Flow Diagram:
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