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.

Universal Audio GPM-ASTRA Specs
I/O 2 x 1/4" TS Instrument Inputs
2 x 1/4" TS Instrument Outputs
USB Type-C for Computer Updates
Controls Speed Knob
Depth Knob
Intensity Knob
Shade Knob
Shape Knob
Mode Knob
Mode Switch
Store Switch
A/B Switch
On Footswitch
Preset Footswitch
Power Requirements Isolated 9 VDC, Center-Negative, 400 mA Minimum (Power Supply Available Separately)
Dimensions Not Specified by Manufacturer
Weight Not Specified by Manufacturer
Packaging Info
Package Weight 1.725 lb
Box Dimensions (LxWxH) 7 x 4.9 x 3.1"