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Universal Audio UAFX Astra Modulation Machine Pedal (Open Box)


  • UA Hardware and Processing in a Stompbox
  • Authentic Vintage Sound
  • Stereo I/O Path For Electric Guitars
  • Chorus, Flanger, Tremolo, and Vibrato
SKU: 819937002861-1 Categories: , , Tags: , , , ,

Universal Audio makes some of the best studio outboard equipment and digital processing around—and now, the company extends their tech to stompboxes with the UAFX Astra, a modulation pedal for electric guitars, basses, and similarly amplified instruments. Sporting a stereo I/O path, the pedal the combines UA digital knowhow with the analog craftsmanship to deliver guitar players three stellar-sounding modulation effects.

Classic chorusing, flanging, vibrato, and tremolo effects are all accessible in the pedal itself. Other effects can be downloaded from Universal Audio and loaded into the pedal over USB. In addition to silent switching and true/buffered bypass selection, the pedal offers a bevy of control as well as instant save/recall of your favorite sounds as presets.

Note: The required power adapter is available separately.

3 Timeless Modulation Effects

The pedal offers three classic modulations effects, including:

  • Chorus Brigade: A classic ’70s analog bucket-brigade chorus with additional Vibrato mode.
  • Flanger/DBLR: A studio flanger/doubler with tones modeling legendary rack effect units.
  • Trem 65: An opto-tube tremolo derived from iconic blackface amps of the mid-1960s.

In addition to these three effects, you’ll have access to more from the Universal Audio website, including the Phaser X90 and the Dharma Trem 61.

Powered by Dual-Processor UAFX Engine

This dual-processor enables you achieve a powerful and authentic sound and also facilitates simple preset loading with instant recall. Each effect allows you to take advantage of secondary controls to shape the modulation .

Classic UA Analog Design

Just like classic and modern UA gear, this pedal is built to last. It also offers both true and buffered bypassing (thanks to a UAD firmware update), as well as silent switching onstage and in the studio.

UPC: 819937002861

Pedal Type: Chorus, Flanger, Tremolo Analog/Digital: Digital Effects: Chrous Brigade, Flanger/Doubler, Trem 65 Inputs: 2 x 1/4" TS (L/mono,R) Outputs: 2 x 1/4" TS (L/mono,R) USB: USB-C (updates) True Bypass: Yes, Switchable to Buffered (via software) Features: Dual-processor UAFX Engine, Recall Stored Settings Power Source: 9V DC 400mA power supply (sold separately)


Universal Audio UAFX Astra Modulation Machine Pedal Limited 1-Year Warranty


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