Albuquerque's Flat line compressor vs Carl Martin Classic Opto-Compressor

The Albuquerque's Flat line compressor and the Carl Martin Classic Opto-Compressor are both pedals sharing sustaining, transparent, compressed. The Carl Martin Classic Opto-Compressor leans warm. Current prices: $109 vs $99.

Similarity
citedBlended 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

Shared genres
citedGenres both listings are associated with.
  • country
  • alternative
Shared tone character
citedDerived from overlapping tonal signals across both listings.
  • sustaining
  • transparent
  • compressed
Citation fame
citedCitation/mention fame — how often this gear is cited across artist rigs and gear discussion.
0%
0%
Price

$109via Reverb

$99via Reverb

Description

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 Carl Martin Classic Opto-Compressor is an optical compressor pedal delivering vintage tone coloring and dynamic control via a light-source and photoresistor circuit. Controls include Gain for pre-compression optical glow and fat tone enhancement, Compression for soft to hard squeeze up to 12:1 ratio, Attack ranging from 1ms transparent limiting to 15ms effect-style compression, and Level for output matching or up to +12dB boost. The optical circuit topology produces natural, musically responsive compression. Danish boutique quality construction.

Genres
citedGenres this gear is documented as being used in.
  • country pop
  • blues
Tonal lean
  • warm

Related searches

Albuquerque's Flat line compressor vs Carl Martin Classic Opto-Compressor — Shared Character & Differences — NodeTone