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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.


  • 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

UA Flow Vintage Tremolo: Three Flavors of Classic Amp Shake

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