Universal Audio UAFX Astra Modulation Pedal Universal Audio UA-ASTRA $ 555 $899.00
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Description

The UAFX Astra Modulation Machine serves up the most sonically authentic bucket-brigade chorus/vibrato, studio flanger/doubler, and tube-driven tremolo effects ever placed into a single stompbox.

Built upon our powerful new UAFX dual-engine processing and unmatched levels of quirky analog realism, Astra delivers richly addictive vintage modulation, beautifully crafted to inspire you for decades.

 

Chorus Brigade: Iconic Japanese Modulation

Upon its release in 1976, this legendary gray bucket-brigade stompbox changed the sound of music with its thick, luxuriant chorus and wavy vibrato. Astra's Brigade Chorus mode gives you the most complete circuit emulation of this landmark unit — including its preamp section for authentically thick, saturated sounds — letting you paint with subtle ripples of analog texture and tone, adding chewiness, shimmer, and motion to everything you play.

 

Flanger/Doubler: A Rackmount Studio Classic

Packed with late-'70s bucket-brigade tech, this classic rackmount studio flanger/doubler is famous for stunning whoosh effects, organic thickening, and a parade of wild sounds that go way beyond typical flanger boxes. Astra's Flanger/Dblr effect is the only end‑to‑end circuit emulation of this ultra‑rare unit, capturing its original features to a "T" and putting impossibly dense, complex flanging/doubling right at your feet.

 

Trem 65: Authentic Tube Amp "Shake"

Few things compare to the optical tube-driven tremolo of '60s American amplifiers. Deep, undulating, and the very essence of vibe, Trem 65 is a faithful emulation of this classic circuit. From shimmering ripples to choppy mayhem, every dynamic detail is captured in UA style, down to the complex interactions between the light source photoresistor and 12AT7 driver tube. Plus, you can explore further and create your own trem textures with variable sine and square wave settings.

 

Dual Stereo Modulation Engines for Endless Creativity

Astra's UAFX engine powers separate stereo instances of each modulation effect, thanks to its unique dual‑engine processing. It's like having two bucket-brigade hardware units running simultaneously — or even dual tremolo circuits — giving you a full stereo spread of complex, jaw‑dropping textures.

 

A State-of-the-Art Stompbox

With modern, high‑powered features like studio‑grade conversion, dual‑processing engines, additional downloadable effects at registration, Live/Preset modes, true/buffered bypass,* and silent switching, Astra Modulation Machine has your colors — now go forth, and paint your masterpiece.

 

Specifications

- Power requirements: Isolated 9VDC, center-negative, 400mA minimum

- Inputs: 2 x ¼” TS (input 2 for stereo connections) Outputs: 2 x ¼” TS (output 2 for stereo connections) USB Type-C for updates via computer

Reviews

Please Note: This item may be on display at the Mooloolaba Music Shop and may have been available for demonstration to in store patrons. We take careful and meticulous care, boxing and cleaning of your product before the shipping or selling of an item. If you do want photos before making a purchase please call our shop where one of our staff can assist in sending more detailed images.

Mooloolaba Music reserves the right to cancel, at any time before delivery and for whatever reason, an Order that it has previously accepted. Mooloolaba Music may do this for example, but without limitation, where:

a) Mooloolaba Music's suppliers are unable to supply Goods that they have previously promised to supply
(b) an event beyond Mooloolaba Music's control, such as storm, fire, flood, earthquake, terrorism, power failure, war, strike or failure of computer systems, means that Mooloolaba Music is unable to supply the Goods within a reasonable time
(c) Goods ordered were subject to an error on the Website, for example, in relation to a description, price or image, which was not discovered prior to the Order being accepted;
(d) The products shown in the images above product may differ to the purchased product. Changes could include, different stands, treatments, slight variations in colour, In-built batteries and charging ports. Please contact our team for further clarification.

We ask that you research parts carefully before buying.
Purchase of any non-licenced part as a replacement spare part is at your own risk.
Some branded replacement parts also require professional installation to fit correctly.
If in doubt we will be happy to advise further and confirm suitability before purchase.

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