The Boss FA-1 FET Amp is a Boss overdrive pedal, currently around $399.99. Close alternatives include the Behringer PB100 Preamp Booster and the JAM Pedals Boomster. It pairs well with the Soldano Astro-20 Head and the Mesa Boogie Mark V.
Boss FA-1 FET Amp
Boss · pedal
The Boss FA-1 FET Amp is a vintage 1983 preamp pedal by Roland Japan using FET transistors to simulate the input stage of a valve amplifier. Originally marketed as a rack preamp in compact pedal form, it provides transparent clean boost and subtle preamp coloration without significant gain clipping. Famously used by The Edge of U2 throughout the 1980s as a clean boost to drive his amplifiers and enhance his guitar tone. Adds presence, definition, and harmonic body without adding distortion character. Long discontinued and now a collector piece among vintage tone enthusiasts.
What stands out
“Originally marketed as a rack preamp in compact pedal form, it provides transparent clean boost and subtle preamp coloration”
— from the listing
“The FA-1 earns its reputation as a transparent preamp pedal that does what a good preamp should: amplify and add harmonic body”
— from the reviews
“The FET circuit adds subtle harmonic warmth that is more organic than modern op-amp boosts”
— from the community notes
“Adds presence, definition, and harmonic body”
— from the listing
“The Boss FA-1 FET Amp is a vintage 1983 preamp pedal by Roland Japan using FET transistors to simulate the input stage of a valve amplifier”
— from the listing
Trade-offs
“the edge used it to achieve his signature early 1980s clean tone with the ambient delay setup”
— from the reviews
- clean boost
- harmonic
- transparent
- subtle
- presence
- fet
- warmth
Price updated Oct 23, 2026
Genres the Boss FA-1 FET Amp is commonly used in
- Ambient
- Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Country
cited
Inferred from shared tonal signals, not a stated genre tag. - Electronic
cited
Inferred from shared tonal signals, not a stated genre tag. - Indie Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Boss FA-1 FET Amp
Soldano Astro-20 Head
Soldano
22% matchInto a transparent tone, Soldano Astro-20 Head brings a pull toward high gain that's missing
Comes later in the signal chain
Mesa Boogie Mark V
Mesa Boogie
21% matchMesa Boogie Mark V leans this transparent tone toward high gain, which it doesn't make on its own
Comes later in the signal chain
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Synergy SL2 Module leans this transparent tone toward high gain, which it doesn't make on its own
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt
Mesa Boogie
tonal matchComes later in the signal chain
Into a transparent tone, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt brings a pull toward high gain that's missing
Marshall Studio JCM900 SN20H
Marshall
tonal matchComes later in the signal chain
Into a transparent tone, Marshall Studio JCM900 SN20H brings a pull toward high gain that's missing
Friedman BE-Mini Head
Friedman
tonal matchComes later in the signal chain
Friedman BE-Mini Head leans this transparent tone toward high gain, which it doesn't make on its own
Hughes & Kettner Warp 7
Hughes & Kettner
tonal matchComes later in the signal chain
Hughes & Kettner Warp 7 leans this transparent tone toward high gain, which it doesn't make on its own
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Ceriatone 2202H leans this transparent tone toward high gain, which it doesn't make on its own
Pedals that stack with the Boss FA-1 FET Amp
Greer Black Mountain
Greer
20% matchGreer Black Mountain leans this transparent tone toward fuzzy, which it doesn't make on its own
Comes later in the signal chain
EarthQuaker Devices Hizumitas
EarthQuaker Devices
19% matchInto a transparent tone, EarthQuaker Devices Hizumitas brings a pull toward high gain that's missing
Comes later in the signal chain
Walrus Audio Monument CS
Walrus Audio
16% 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 Walrus Audio Monument CS after Boss FA-1 FET Amp in the signal chain, clear of Boss FA-1 FET Amp's own gain stage
Comes later in the signal chain
Vox Valvenergy Silk Drive
Vox
12% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.
Vox Valvenergy Silk Drive's own smooth character is the real reason this is worth trying
Comes earlier in the signal chain
Alexander Pedals Now We Are Ghosts Reverb
Alexander Pedals
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.
Keep Alexander Pedals Now We Are Ghosts Reverb after Boss FA-1 FET Amp in the signal chain, clear of Boss FA-1 FET Amp's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Eventide Modulated Delay
Eventide
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.
Keep Boss FA-1 FET Amp's clean boost voice out front: Eventide Modulated Delay goes after Boss FA-1 FET Amp in the signal chain so its modulated voice doesn't muddy it — 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 leans this transparent tone toward fuzzy, which it doesn't make on its own
Warm Audio Jet Phaser
Warm Audio
tonal matchComes later in the signal chain
Warm Audio Jet Phaser goes after Boss FA-1 FET Amp — modulation sits after the gain for a defined swirl
Cheaper alternatives
Beetronics Nectar Tone Sweetener
Beetronics
58% similarityShared character: presence, subtle, boost
ToneConcepts Distillery 'The Luke'
Toneconcepts
56% similarityShared character: boost, presence, subtle
Crowther Hot Cake
Crowther
56% similarityShared character: boost, presence, subtle
Z.Vex Super Hard On
Zvex
56% similarityShared character: boost, subtle, clean
Xotic RC Booster V2
Xotic
55% similarityShared character: boost, presence, subtle
Mile End Effects PreAmp 150
Mile End Effects
55% similarityShared character: boost, transparent
Similar charactersee all similar tone character →
Behringer PB100 Preamp Booster
Behringer
64% similarityShared character: definition, boost, presence
JAM Pedals Boomster
Jam Pedals
59% similarityShared character: boost, subtle, transparent
JHS Clover
JHS Pedals
58% similarityShared character: edge, boost, subtle
Matthews Effects Aristocrat MOSFET Boost
Matthews Effects
56% similarityShared character: boost, transparent, clean
JHS Overdrive/Preamp
JHS Pedals
54% similarityShared character: boost, warm, studio
Benson Amps Chimera Preamp Pedal
Benson Amps
54% similarityShared character: boost, transparent, clean
See all alternatives to the Boss FA-1 FET Amp (cheaper + boutique) →
Questions people ask
What are good alternatives to the Boss FA-1 FET Amp?+
The closest matches in character are the Behringer PB100 Preamp Booster, the JAM Pedals Boomster, the JHS Clover. Budget picks: Beetronics Nectar Tone Sweetener, ToneConcepts Distillery 'The Luke', Crowther Hot Cake.
What pairs well with the Boss FA-1 FET Amp?+
Strong matches from rig and tone-complementarity evidence: Soldano Astro-20 Head, Mesa Boogie Mark V, Synergy SL2 Module — Into a transparent tone, Soldano Astro-20 Head brings a pull toward high gain that's missing.
How much does the Boss FA-1 FET Amp cost?+
Around $399.99 (live listing price, updated Oct 23, 2026).