Three Authentic Tube Tremolo Flavors at Your FeetFlow Vintage Tremolo, built on the foundation of our flagship Astra Modulation Machine, delivers three distinct tube tremolo flavors – from old-school to modern – in a sleek, compact pedal.

Dharma: Experience Rich Harmonic TremoloImmerse yourself in the delightful throb of early 60s American "brown" amps, adding a sticky mix of volume fluctuation and phase shift. This goes beyond the original circuit, perfect for vintage soul, surf, and even Uni-Vibe textures.65: Dive into Perfect Tube TremoloPlay with a comprehensive emulation of the optical tremolo circuit from a classic 1965 American tube amp. Feel the pulsating glow of the most famous "vibrato" ever created, reminiscent of your favorite old recordings.

Square: Add Modern, Choppy TexturesBuilt from the ground up using our proprietary virtual optical photocell, achieve the undulating beauty of square wave shapes and delve into rhythmic tremolo effects that enhance any genre, from modern pop and R&B to blues and indie rock.

Get Authentic Tube Preamp SoundFlow provides the warm, complex sounds of a tube preamp, replicating early to mid-60s American combo amps. This ensures your tremolo effects are more present, three-dimensional, and musical.

Compact and Durable StompboxDesigned for years of reliable performance, Flow Vintage Tremolo offers switchable true/trails bypass, tap tempo, and "make up gain" volume control. This ensures your tremolo effects are heard loud and clear for years to come.

Key FeaturesAuthentic emulations of three tube tremolo effects in a compact stompboxPerfectly captured tube preamp for fat, three-dimensional tremolo tonesThree tremolo modes: Dharma (harmonic tremolo), 65 (round, sine wave), and Square (choppy, square wave)Built-in tap tempo for synchronizing tremolo effectsVolume control and true/buffered bypassTimeless UA design and craftsmanship, built for decades of reliable use*All trademarks are property of their respective owners and are used only to describe the modeled effects as part of Flow Vintage Tremolo.

Don't wait! Elevate your sound with the classic tube tremolo effects of the Flow Vintage Tremolo.

SPECIFICATIONSPower Requirements: Isolated 9VDC, center-negative, minimum 250mA (sold separately)Inputs: 1 x 1/4″ TS unbalancedOutputs: 1 x 1/4″ TS unbalancedUSB Type-C: For updates via computerHeight: 5.81 cmWidth: 6.55 cmDepth: 12.07 cmWeight: 0.299 kg