Three flavors of authentic tube tremolo, at your feet.

Get three stunning emulations of legendary tube amp tremolo effects, from opto to harmonic

Explore rich, authentic tones and effects with perfectly emulated tube preamp section

Sync your trem with tap tempo and add boost effects with Volume control

Rely on timeless UA craftsmanship, built for years of rock-solid performance

Details

Authentic emulations of three tube-driven tremolo effects, captured in a compact stompbox
Perfectly captured tube preamp for fat, three-dimensional tremolo tones
Three tremolo modes: Dharma (harmonic tremolo), 65 (round, sine wave), and Square (choppier, square wave)
Onboard tap tempo for syncing trem effects
Volume control and true/buffered bypass
Timeless UA design and craftsmanship, built for decades of dependable performance

Three Flavors of Authentic Tube Tremolo, at your Feet

Evolved from our flagship Astra Modulation Machine, Flow Vintage Tremolo gives you three flavors of tube-driven wiggle and shake — from old school to modern — in a dapper, compact package.

Dharma: Experience Thick Harmonic Tremolo

Immerse yourself in the chewy throb of early ’60s American “brown” amps, and add a syrupy mix of volume fluctuation and phase shifting-far beyond the original circuit – that’s perfect for vintage soul, surf, and even Uni-Vibe textures.*

65: Indulge in Perfect Tube Amp Tremolo

Play through an exhaustive end-to-end emulation of a classic 1965 American tube amp’s optical tremolo circuit, and get the pulsating shimmer of the most famous “vibrato” ever created. Sounds just like your favorite old record.

Square: Add Modern, Choppy Textures

Built from the ground up using our own virtual optical photocell, get the rippling beauty of square waveforms and dive into rhythmic trem effects that enhance any genre, from modern pop and R&B to blues and indie rock.