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UA-ASTRA
ⓘ Please call for current stock updates before visiting us in-store.
Taking you deep down the rabbit hole of classic analog modulation, 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.
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.
Features
Shipping Policy
Orders that may incur a shipping surcharge:
Customers outside of Australian Metro areas please be advised that we cannot offer free shipping on bulky items to certain rural areas.
If this applies to your order we will be in contact ASAP after checkout. This may result in a partial shipping cost after checkout or orders being refunded and cancelled due to our usual courier services being unable to service certain rural areas.
We apologise in advance if this affects you. Please feel free to contact us prior to checkout for more information.
Drop Ship Orders Drop ship orders are shipped directly from our Australian based suppliers. Please allow for 1-2 extra business days for drop ship orders to be dispatched.
Delivery Time Orders are dispatched within 1 -2 business days and usually takes 2-5 business days to arrive within Australia. If for any reason there may be a delay, we will contact you within 2 business days. Delivery times may take longer for rural/ remote areas.
If you have any concerns, or require an item to be delivered by a certain date, please contact us so that we can try our best help you receive your order on time.
Tracking Your Order Tracking details will be emailed to you as soon as your order has been processed for shipping. If you are having trouble tracking your order, please feel free to contact us for assistance!
Returns Procedure
Once your return is received and inspected, we will be in contact to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, we will process the return as a refund, exchange or store credit as quickly as possible.
30-Day Returns Policy Here at Sky Music, we want you to be 100% happy with your purchase. If you are not satisfied with your new product for any reason you may return it for a refund, exchange or store credit within 30 days of purchase. Please see the full policy for conditions, exemptions and procedures. For metro-Melbourne orders we charge a flat rate of $18 for change of mind swaps and exchanges & returns and staff will advise for interstate, rural and Victorian areas outside of the metro-Melbourne area.
DISCLAIMER: The 30 Day Returns Policy stated above is not a comparison or 'try before you buy' style service. Sky Music reserve the right to refuse a return we believe may be an abuse of this policy. Sky Music reserve the right to revoke return privileges to any one individual abusing this 30 Day Returns Policy, i.e. with multiple returns in a short period of time without a valid reason. The 30 Day Returns Policy does not extend to orders made under a Studio 19 Rental agreement. Please see Studio 19 terms & conditions for their return policy.
Pricing
Advertised prices only apply to items currently in stock and ready to ship. Items that are out of stock, sold out or otherwise unavailable are subject to price changes that may be because of price rises and market fluctuations that are outside of Sky Music's control.
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