Albuquerque's Flat line compressor vs Keeley Classic Keeley Compressor
The Albuquerque's Flat line compressor and the Keeley Classic Keeley Compressor are both pedals sharing sustaining, transparent. The Albuquerque's Flat line compressor leans compressed. The Keeley Classic Keeley Compressor leans dynamic.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.55% — moderately similar
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Derived from overlapping tonal signals across both listings.- sustaining
- transparent
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$109via Reverb
Albuquerque's Flat Line Compressor is a boutique build of the John Hollis Flatline circuit, a well-known optical compressor design within the DIY guitar effects community using an LED-and-photoresistor combination, sometimes called a Vactrol, to control gain reduction. With the sustain control dialed back the circuit offers roughly three times gain between soft and hard playing dynamics, and fully engaged that ratio climbs to around twenty times, flattening output enough to produce long, even sustain while keeping the characteristically transparent, non-distorted compressed tone optical designs are known for. Hollis was an early and influential contributor to the DIY pedal scene, and his Flatline circuit has since been built and sold by multiple small boutique makers, of which this Albuquerque's version is one example.
The Keeley Compressor is the classic optical compressor from Keeley Electronics (Edmond, Oklahoma), one of the most respected boutique compressors in guitar effects, delivering transparent, musical optical compression. The original Keeley Compressor in its 4-knob and 2-knob versions established Keeley as a compressor specialist and remains a standard for boutique optical compression. Controls include Sustain and Level (2-knob) or Sustain, Level, Blend, and Attack (4-knob) for comprehensive optical compression control.
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Genres this gear is documented as being used in.- country
- country pop
- alternative
- Electronic
- Alternative Rock
- Country
- Blues
- compressed
- dynamic