Albuquerque's Flat line compressor vs J. Rockett Airchild Six Sixty
The Albuquerque's Flat line compressor and the J. Rockett Airchild Six Sixty are both pedals sharing compressed, low gain. The Albuquerque's Flat line compressor leans sustaining and transparent. Current prices: $109 vs $229.
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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.48% — somewhat different
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Derived from overlapping tonal signals across both listings.- compressed
- low gain
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$109via Reverb
$229via 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 J. Rockett Airchild Six Sixty is a stompbox interpretation of the legendary Fairchild 660 studio compressor, translating that famous rack-mounted hardware's smoothing and harmonic character into pedal form. A four-knob interface centers on an interactive Threshold and Output pair, where increasing compression via Threshold works alongside Output's boost capacity, keeping the pedal easy to dial in despite emulating notoriously complex studio hardware. Like the original Fairchild, it's described as making everything run through it sound better, smoothing transients, enhancing harmonic richness, and adding a hint of growl, even with Threshold set to zero.
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Genres this gear is documented as being used in.- country
- country pop
- alternative
- Alternative Rock
- Blues
- Country
- sustaining
- transparent