The CostaLab Buffer is a Costalab phaser pedal, currently around $99.46. Close alternatives include the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator and the MXR Phase 90. It pairs well with the PRS MT100 and the Synergy SL2 Module.
CostaLab Buffer
Costalab · pedal
CostaLab built its Buffer pedal around a pure Class A circuit specifically to preserve tonal nuance even across a complex, effects-heavy pedalboard, designed for two main placements: at the front of a chain packed with many pedals to protect the signal before it degrades, or at the very end just before the amp, functioning as a true line driver for clarity, power, and focus. Its ultra-high input impedance guards against the tonal thinning long cable runs or mismatched circuit impedances can cause, and CostaLab markets it for use across electric guitar, bass, and amplified acoustic instruments alike, with the pedal drawing an efficient under-20-milliamp current from a standard 9-volt supply.
What stands out
“costalab built its buffer pedal around a pure class a circuit specifically to preserve tonal nuance even across a complex”
— from the listing
“Its use case is purely preservative , restoring or protecting signal clarity across long cables or elaborate multi-pedal boards”
— from the community notes
“Its ultra-high input impedance guards against the tonal thinning long cable runs or mismatched circuit impedances can cause, and CostaLab markets it for use across electric guitar, bass, and amplified acoustic instruments alike, with the pe…”
— from the listing
“In a chain its flexible placement, either at the front to protect against a large pedal collection's cumulative signal loss or at the end as a line driver, gives players real options depending on their specific rig's weak points”
— from the community notes
“The standout strength is genuine Class A circuit design applied specifically to buffering, a more premium approach than many simpler buffer circuits use”
— from the community notes
- class a
- clarity
- bass
- complex
- impedance
- dynamic
- natural
- bypass
Price updated Oct 24, 2026
Genres the CostaLab Buffer is commonly used in
- Alternative Rock
Amps that pair well with the CostaLab Buffer
PRS MT100
PRS
20% matchPRS MT100 leans toward mid-forward, 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
Put Synergy SL2 Module after CostaLab Buffer
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt
Mesa Boogie
tonal matchComes later in the signal chain
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt goes after CostaLab Buffer in the chain
Egnater Tweaker 88 Head
Egnater
tonal matchComes later in the signal chain
Egnater Tweaker 88 Head goes after CostaLab Buffer in the chain
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Put Ceriatone 2202H after CostaLab Buffer
Carol-Ann OD-2R
Carol Ann
tonal matchComes later in the signal chain
Carol-Ann OD-2R goes after CostaLab Buffer in the chain
Marshall Studio JCM900 SN20H
Marshall
tonal matchComes later in the signal chain
Marshall Studio JCM900 SN20H goes after CostaLab Buffer in the chain
Bad Cat Lynx 50
Bad Cat
tonal matchComes later in the signal chain
Put Bad Cat Lynx 50 after CostaLab Buffer
Pedals that stack with the CostaLab Buffer
Beetronics Overhive
Beetronics
23% matchBeetronics Overhive leans toward transparent, and that's a real, usable character to pair with
Comes earlier in the signal chain
Beetronics Nectar
Beetronics
23% matchBeetronics Nectar leans toward fuzzy, and that's a real, usable character to pair with
Comes earlier in the signal chain
Meris Polymoon
Meris
10% 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 Meris Polymoon after CostaLab Buffer in the signal chain, where it won't crowd CostaLab Buffer — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Dawner Prince Boonar
Dawner Prince
9% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run Dawner Prince Boonar after CostaLab Buffer in the signal chain, where it won't crowd CostaLab Buffer — 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 earlier in the signal chain
Put Dr. Scientist Frazz Dazzler V2 in front of CostaLab Buffer
Warm Audio Jet Phaser
Warm Audio
tonal matchPut Warm Audio Jet Phaser after CostaLab Buffer: modulation reads clearest once the core tone is set
Donner Big Mouth Distortion
Donner
tonal matchComes earlier in the signal chain
Put Donner Big Mouth Distortion in front of CostaLab Buffer
Demon FX Gladiator Double Preamp Just
Demon Fx
tonal matchComes later in the signal chain
Put Demon FX Gladiator Double Preamp Just after CostaLab Buffer
Boutique & premium upgrades
JHS Kodiak
JHS Pedals
46% similarityShared character: single rig, true bypass
Old Blood Noise Endeavors Blackcap Harmonic Tremolo
Old Blood Noise Endeavors
44% similarityShared character: true bypass, bass
Catalinbread Wake Chorus/Octaver
Catalinbread
43% similarityShared character: single rig, bass
Spaceman Explorer 6-Stage Phaser
Spaceman
42% similarityShared character: true bypass
Mu-Tron Bi-Phase
Mu Tron
40% similaritySimilar voicing: transparent, dynamic
Similar character
Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator
pedal
50% similarityShared character: 8 impedance, clarity
MXR Phase 90
MXR
45% similarityShared character: true bypass, alternative
Ibanez CS Mini Compressor/Sustainer
Ibanez
42% similarityShared character: true bypass, alternative
Effectrode Tube-Vibe
Effectrode
41% similarityShared character: 8 impedance, clarity, alternative
MXR M134 Stereo Chorus
MXR
41% similarityShared character: power, alternative, bass
JHS 3 Series Flanger
JHS Pedals
41% similaritySimilar voicing: transparent, dynamic
See all alternatives to the CostaLab Buffer (cheaper + boutique) →
Questions people ask
What are good alternatives to the CostaLab Buffer?+
The closest matches in character are the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator, the MXR Phase 90, the Ibanez CS Mini Compressor/Sustainer. Boutique upgrades: JHS Kodiak, Old Blood Noise Endeavors Blackcap Harmonic Tremolo, Catalinbread Wake Chorus/Octaver.
What pairs well with the CostaLab Buffer?+
Strong matches from rig and tone-complementarity evidence: PRS MT100, Synergy SL2 Module, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt — PRS MT100 leans toward mid-forward, and that's a real, usable character to pair with.
How much does the CostaLab Buffer cost?+
Around $99.46 (live listing price, updated Oct 24, 2026).