The Albuquerque's Flat line compressor is an Albuquerque S compressor pedal, currently around $109. Close alternatives include the Mooer Dyna Compressor and the EarthQuaker Devices The Warden. It pairs well with the Orange Rockerverb 50 MkIII 2-Channel 50W Head and the Synergy SL2 Module.
Albuquerque's Flat line compressor
Albuquerque S · pedal
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.
What stands out
“The standout caveat is that optical compressors respond somewhat more slowly than VCA-based designs, a real but generally minor trade-off most players find acceptable for the smoother, more natural feel it provides”
— from the community notes
“even sustain while keeping the characteristically transparent”
— from the listing
“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 whil…”
— from the listing
“musical compression character”
— from the community notes
“Pedal builders and DIY effects specialists rate the Hollis Flatline circuit highly within the optical compressor category, citing its well-proven, transparent compression character as a big part of why it's remained popular enough for multi…”
— from the reviews
Trade-offs
“In a chain a compressor like this typically sits early in the signal path, before any gain-shaping pedals, so the evened-out dynamics feed cleanly into whatever drive or distortion follows”
— from the community notes
- compressor
- optical
- transparent
- musical
- compression
- sustain
- drive
- broadly similar core character
Price updated Oct 23, 2026
Genres the Albuquerque's Flat line compressor is commonly used in
- Country
cited
Inferred from shared tonal signals, not a stated genre tag. - Country Pop
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues
cited
Inferred from shared tonal signals, not a stated genre tag. - Funk
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Albuquerque's Flat line compressor
Orange Rockerverb 50 MkIII 2-Channel 50W Head
Orange
17% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)
Orange Rockerverb 50 MkIII 2-Channel 50W Head leans toward full, and that's a real, usable character to pair with
Comes later in the signal chain
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Synergy SL2 Module goes after Albuquerque's Flat line compressor in the chain
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt
Mesa Boogie
tonal matchComes later in the signal chain
Put Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt after Albuquerque's Flat line compressor
Marshall Studio JCM900 SN20H
Marshall
tonal matchComes later in the signal chain
Put Marshall Studio JCM900 SN20H after Albuquerque's Flat line compressor
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Ceriatone 2202H goes after Albuquerque's Flat line compressor in the chain
Friedman BE-Mini Head
Friedman
tonal matchComes later in the signal chain
Friedman BE-Mini Head goes after Albuquerque's Flat line compressor in the chain
Hughes & Kettner Warp 7
Hughes & Kettner
tonal matchComes later in the signal chain
Hughes & Kettner Warp 7 goes after Albuquerque's Flat line compressor in the chain
Egnater Tweaker 88 Head
Egnater
tonal matchComes later in the signal chain
Put Egnater Tweaker 88 Head after Albuquerque's Flat line compressor
Pedals that stack with the Albuquerque's Flat line compressor
Wren and Cuff Box of War Small Foot Fuzz
Wren And Cuff
18% matchWren and Cuff Box of War Small Foot Fuzz leans toward fuzzy, and that's a real, usable character to pair with
Comes later in the signal chain
Wren and Cuff Box of War OG
Wren And Cuff
17% matchWren and Cuff Box of War OG's own full character is the real reason this is worth trying
Comes later in the signal chain
Malekko Electro-Harmonix Memory Toy Analog Delay
Electro-Harmonix
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep the Memory Toy's warm analog echoes trailing after the Flat Line — compress first so the repeats decay evenly instead of chasing an uneven signal. — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Eventide Modulated Delay
Eventide
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Eventide Modulated Delay after Albuquerque's Flat line compressor in the signal chain, where it won't crowd Albuquerque's Flat line compressor — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Dr. Scientist Frazz Dazzler V2
Dr Scientist
tonal matchComes later in the signal chain
Dr. Scientist Frazz Dazzler V2 goes after Albuquerque's Flat line compressor in the chain
Warm Audio Jet Phaser
Warm Audio
tonal matchComes later in the signal chain
Warm Audio Jet Phaser belongs after Albuquerque's Flat line compressor, since modulation reads clearest once the core tone is set
Death By Audio Destruction
Death By Audio
tonal matchComes later in the signal chain
Put Death By Audio Destruction after Albuquerque's Flat line compressor
Donner Big Mouth Distortion
Donner
tonal matchComes later in the signal chain
Donner Big Mouth Distortion goes after Albuquerque's Flat line compressor in the chain
Cheaper alternatives
Mojo Gear Orange Compressor (Dan Armstrong Orange Squeezer Clone)
Mojo Gear
54% similarityShared character: compressor, circuit, compression
Marshall ED 1
Marshall
54% similarityShared character: compressor, sustain, compression
CNZ Audio SCP-20
Cnz Audio
52% similarityShared character: compressor, sustain, compression
Boutique & premium upgrades
PRS Mary-Cries Compressor
PRS
57% similarityShared character: compressor, compression, transparent
T-Rex Neo Comp Compressor
T Rex
56% similarityShared character: compressor, compression, transparent
Walrus Audio Mira
Walrus Audio
53% similarityShared character: compressor, sustain, studio
Carl Martin Comp/Limiter
Carl Martin
94% similaritysimilar tone character
Vox Valvenergy Smooth Impact
Vox
94% similaritysimilar tone character
DryBell Module 4
Drybell
94% similaritysimilar tone character
Similar charactersee all similar tone character →
Mooer Dyna Compressor
Mooer
56% similarityShared character: compressor, sustain, compression
EarthQuaker Devices The Warden
EarthQuaker Devices
55% similarityShared character: compressor, compression, subtle
Orange Sustain
Orange
55% similarityShared character: compressor, sustain, compression
MXR Super Comp M132
Dunlop
55% similarityShared character: compressor, compression, transparent
Jackson Audio hour-glass
Jackson Audio
54% similarityShared character: singing, compressor, sustain
Jackson Audio Bloom EQ Boost Compression
Jackson Audio
54% similarityShared character: compressor, compression, subtle
See all alternatives to the Albuquerque's Flat line compressor (cheaper + boutique) →
Questions people ask
What are good alternatives to the Albuquerque's Flat line compressor?+
The closest matches in character are the Mooer Dyna Compressor, the EarthQuaker Devices The Warden, the Orange Sustain. Budget picks: Mojo Gear Orange Compressor (Dan Armstrong Orange Squeezer Clone), Marshall ED 1, CNZ Audio SCP-20. Boutique upgrades: PRS Mary-Cries Compressor, T-Rex Neo Comp Compressor, Walrus Audio Mira.
What pairs well with the Albuquerque's Flat line compressor?+
Strong matches from rig and tone-complementarity evidence: Orange Rockerverb 50 MkIII 2-Channel 50W Head, Synergy SL2 Module, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt — Orange Rockerverb 50 MkIII 2-Channel 50W Head leans toward full, and that's a real, usable character to pair with.
How much does the Albuquerque's Flat line compressor cost?+
Around $109 (live listing price, updated Oct 23, 2026).