The Universal Audio Flow Tremolo is a Universal Audio tremolo pedal, currently around $114.91. Close alternatives include the Bookworm Effects Laughing Man Optical Tremolo V3 and the BBE Tremor V2. It pairs well with the Soldano SLO 100 100-Watt Tube Guitar Amplifier and the Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt.
Universal Audio Flow Tremolo
Universal Audio · pedal
The Universal Audio UAFX Flow is a compact vintage tremolo pedal that emulates classic tube-powered amp tremolo, delivering the woozy, pulsing sound of vintage Fender amps with impressive fidelity. It offers three modes: 65, modeling the optical tremolo of mid-1960s amps like the Deluxe and Twin Reverb; Square, a harder-edged choppier waveform; and Dharma, a harmonic tremolo voiced after late-1950s and early-1960s Fender amps. Its range spans gently pulsing throb to machine-gun chop, and the harmonic mode adds a lush, phasey movement many players find unexpectedly rewarding. Simple to use yet richly authentic, it is an affordable, great-sounding choice for blues, surf, indie, country and vintage-flavored tones in a small true-bypass enclosure.
What stands out
“The community praises it as one of the best-sounding compact tremolos for the money, nailing classic tube-amp tremolo with convincing vintage Fender character”
— from the community notes
“It offers three modes: 65, modeling the optical tremolo of mid-1960s amps like the Deluxe and Twin Reverb; Square, a harder-edged choppier waveform; and Dharma, a harmonic tremolo voiced after late-1950s and early-1960s Fender amps”
— from the listing
“simple to use yet richly authentic”
— from the listing
“and the harmonic mode adds a lush”
— from the listing
“Players use it for surf, blues, indie, country and any vintage-leaning tone, choosing the 65 optical mode for woozy amp throb, Square for hard choppy rhythm, and the harmonic Dharma mode for a lush, phasey movement that many call the subtle…”
— from the community notes
- vintage
- harmonic
- simple
- tremolo
- lush
- rhythm
- optical
- indie
Price updated Oct 23, 2026
Genres the Universal Audio Flow Tremolo is commonly used in
- Country
- Indie
- Blues
- Americana
cited
Inferred from shared tonal signals, not a stated genre tag. - Electronic
cited
Inferred from shared tonal signals, not a stated genre tag. - Surf Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Universal Audio Flow Tremolo
Soldano SLO 100 100-Watt Tube Guitar Amplifier
Soldano
18% matchSoldano SLO 100 100-Watt Tube Guitar Amplifier leans toward high gain, and that's a real, usable character to pair with
Comes later in the signal chain
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 Universal Audio Flow Tremolo in the chain
Marshall Studio JCM900 SN20H
Marshall
tonal matchComes later in the signal chain
Marshall Studio JCM900 SN20H goes after Universal Audio Flow Tremolo in the chain
Friedman BE-Mini Head
Friedman
tonal matchComes later in the signal chain
Put Friedman BE-Mini Head after Universal Audio Flow Tremolo
Hughes & Kettner Warp 7
Hughes & Kettner
tonal matchComes later in the signal chain
Put Hughes & Kettner Warp 7 after Universal Audio Flow Tremolo
Egnater Tourmaster Combo 4212
Egnater
tonal matchComes later in the signal chain
Egnater Tourmaster Combo 4212 goes after Universal Audio Flow Tremolo in the chain
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Put Synergy SL2 Module after Universal Audio Flow Tremolo
Hughes & Kettner Coreblade
Hughes & Kettner
tonal matchComes later in the signal chain
Hughes & Kettner Coreblade goes after Universal Audio Flow Tremolo in the chain
Pedals that stack with the Universal Audio Flow Tremolo
Fjord Fuzz Odin
Fjord Fuzz
22% matchFjord Fuzz Odin leans toward fuzzy, and that's a real, usable character to pair with
Comes earlier in the signal chain
Fjord Fuzz Berserk
Fjord Fuzz
22% matchWhat Fjord Fuzz Berserk brings here leans toward aggressive — that's worth building a pairing around
Comes earlier in the signal chain
Roland SDE-3000D
Roland
7% matchPut Roland SDE-3000D after Universal Audio Flow Tremolo in the signal chain, where it won't crowd Universal Audio Flow Tremolo — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Empress Echosystem
Empress
7% matchPut Empress Echosystem after Universal Audio Flow Tremolo in the signal chain, where it won't crowd Universal Audio Flow Tremolo — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Death By Audio Destruction
Death By Audio
tonal matchComes earlier in the signal chain
Death By Audio Destruction goes in front of Universal Audio Flow Tremolo in the chain
Dr. Scientist Frazz Dazzler V2
Dr Scientist
tonal matchComes earlier in the signal chain
Put Dr. Scientist Frazz Dazzler V2 in front of Universal Audio Flow Tremolo
Subdecay F-Bomb
Subdecay
tonal matchComes earlier in the signal chain
Subdecay F-Bomb goes in front of Universal Audio Flow Tremolo in the chain
Warm Audio Jet Phaser
Warm Audio
tonal matchWarm Audio Jet Phaser belongs after Universal Audio Flow Tremolo, since modulation reads clearest once the core tone is set
Cheaper alternatives
Artec SE-VTM Vintage Tremolo
Artec
61% similarityShared character: true bypass, tremolo, smooth
Carl Martin Surf Trem V3
Carl Martin
61% similarityShared character: tremolo, smooth, reverb
Arcade Audio Cheat Code
Arcade Audio
58% similarityShared character: true bypass, tremolo, simple
Red Witch Seven Sisters Eve Tremolo
Red Witch
57% similarityShared character: smooth, vintage charm
Behringer UT300
Behringer
57% similarityShared character: true bypass, tremolo, subtle
Boffin FX Vibratron
Boffin Fx
57% similarityShared character: true bypass, tremolo, subtle
Boutique & premium upgrades
Walrus Audio Monumental Stereo Harmonic Tremolo
Walrus Audio
60% similarityShared character: tremolo, subtle
MXR Tremolo M305
MXR
60% similarityShared character: tremolo, subtle, smooth
JAM Pedals Harmonious Monk MK1
Jam Pedals
59% similarityShared character: true bypass, tremolo
Mad Professor Mellow Yellow Tremolo
Mad Professor
59% similarityShared character: smooth, vintage charm
Dophix Galileo Optical Tremolo
Dophix
58% similarityShared character: smooth, reverb, vintage charm
Old Blood Noise Endeavors Blackcap Harmonic Tremolo
Old Blood Noise Endeavors
94% similaritysimilar tone character
Similar charactersee all similar tone character →
Bookworm Effects Laughing Man Optical Tremolo V3
Bookworm Effects
66% similarityShared character: tremolo, subtle, reverb
BBE Tremor V2
Bbe
62% similarityShared character: true bypass, subtle, smooth
JHS Tidewater Tremolo
JHS Pedals
60% similarityShared character: true bypass, tremolo, simple
Strymon Flint Tremolo & Reverb
Strymon
59% similarityShared character: tremolo, reverb, vintage charm
JAM Pedals Harmonious Monk Tremolo
Jam Pedals
59% similarityShared character: tremolo, subtle, smooth
Artec RSV-3 Resovibe
Artec
58% similarityShared character: true bypass, tremolo, reverb
See all alternatives to the Universal Audio Flow Tremolo (cheaper + boutique) →
Questions people ask
What are good alternatives to the Universal Audio Flow Tremolo?+
The closest matches in character are the Bookworm Effects Laughing Man Optical Tremolo V3, the BBE Tremor V2, the JHS Tidewater Tremolo. Budget picks: Artec SE-VTM Vintage Tremolo, Carl Martin Surf Trem V3, Arcade Audio Cheat Code. Boutique upgrades: Walrus Audio Monumental Stereo Harmonic Tremolo, MXR Tremolo M305, JAM Pedals Harmonious Monk MK1.
What pairs well with the Universal Audio Flow Tremolo?+
Strong matches from rig and tone-complementarity evidence: Soldano SLO 100 100-Watt Tube Guitar Amplifier, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt, Marshall Studio JCM900 SN20H — Soldano SLO 100 100-Watt Tube Guitar Amplifier leans toward high gain, and that's a real, usable character to pair with.
How much does the Universal Audio Flow Tremolo cost?+
Around $114.91 (live listing price, updated Oct 23, 2026).