Welcome to the pinnacle of classic modulation effects with the Universal Audio UAFX Astra Modulation Machine Pedal. The UA engineers embarked on a journey into the depths of analog modulation, emerging with the most authentic bucket-brigade chorus/vibrato, studio flanger/doubler, and tube-driven tremolo ever condensed into a single stompbox.
Chorus Brigade: Iconic Japanese Modulation
Experience the complete circuit emulation of the legendary grey bucket-brigade chorus stompbox. The UAFX Astra captures every nuance, including the preamp section, for rich, saturated sounds reminiscent of '70s modulation effects.
Flanger/Doubler: A Rackmount Studio Classic
Featuring the organic thickening and wild sounds of the classic rackmount studio flanger/doubler. The UAFX Astra's end-to-end circuit emulation faithfully reproduces every aspect of this ultra-rare unit, offering dense, complex flanging/doubling at your feet.
Trem 65: Authentic Tube Amp "Shake"
Delve into the world of '60s American amplifiers with Trem 65, a faithful emulation of the optical tube-driven tremolo. From shimmering ripples to choppy mayhem, the UAFX Astra captures the intricate interactions between the light source photoresistor and 12AT7 driver tube, providing unparalleled versatility with variable sine and square wave settings.
Dual Stereo Modulation Engines for Endless Creativity
Harness the power of the Astra's UAFX engine, driving separate stereo instances of each modulation effect. This unique dual-engine processing offers a full stereo spread of complex textures, akin to running two bucket-brigade hardware units simultaneously.
A State-of-the-Art Stompbox
Experience modern features like studio-grade audio conversion, dual processing engines, Live/Preset modes, selectable true or buffered bypass, and tap tempo footswitch mode via the UAFX Control app.
Key Features
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Flagship, no-compromise stompbox offering the most authentic bucket-brigade and tube-driven tremolo effects ever captured in an effects pedal
- End-to-end emulation of iconic Japanese chorus/vibrato pedal
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Complete circuit capture of legendary '70s rackmount studio flanger/doubler
- Stem-to-stern model of tube-driven optical tremolo from classic '60s American amps
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Silent switching, Preset footswitch mode to store and recall your favorite setting
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UAFX Control mobile app lets you to switch between true and buffered bypass and access Preset + Tap footswitch mode for time-synced effects
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Free Phaser X90 and Dharma Trem 61 effects with registration
Specifications
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Power requirements: Isolated 9VDC, center-negative, 400mA minimum (sold separately)
- Inputs: 2 x ¼” TS (right input for stereo connections)
- Outputs: 2 x ¼” TS (right output for stereo connections)
- USB Type-C for updates via computer
- Height: 2.56” (6.5 cm)
- Width: 3.62” (9.2 cm)
- Depth: 5.55” (14.1 cm)
- Weight: 1.24 lbs (0.567 kg)
