Videos (2)

View Allarrow icon
Universal Audio UAFX Pedals | Shooter Jennings First Impressionsplay button

Universal Audio UAFX Pedals | Shooter Jennings First Impressions

UAFX Astra Modulation Machineplay button

UAFX Astra Modulation Machine

Universal Audio

collapse expand iconDescription

The flagship Astra Modulation Machine pedal establishes a new standard for faithful emulations of coveted analog effects, delivering a sonic authenticity that surpasses all other stompboxes. Featuring three legendary effects—the Chorus Brigade, Flanger/DBLR and Trem 65—it conjures the tones that shaped rock history. Operable in mono, dual mono and stereo modes, the Astra Modulation Machine lets you craft lush soundscapes in any configuration. With rugged construction, intuitive controls and preset capabilities, the Astra Modulation Machine gives you a portal to the past and a path to new discoveries.

Chorus Brigade Resurrects a Classic

The Chorus Brigade effect meticulously recreates the famed analog chorus and vibrato unit from the 1970s. With controls for speed, depth, level and mode, you can dial in every nuance of this influential sound, from subtle shimmer to seasick sway. The Chorus Brigade's circuitry gives a dimensional, retro character that stands apart from sterile digital replicas.

Flanger/DBLR Bends Time and Space

The Flanger/DBLR effect captures analog sound in exacting detail, simulating its colorful, somewhat lo-fi bucket-brigade circuit. Tweak the speed, depth and intensity knobs to conjure anything from a subtle thickening effect to an otherworldly whoosh.

Trem 65 Delivers Opto Tremolo Warmth

Based on the beloved tremolo circuit in the American '60s amplifiers, the Trem 65 effect faithfully recreates their balanced, warm pulsations. Choose between sine or square wave modulation, and adjust the intensity and speed for tremolo that moves from barely perceptible to intensely pulsing. The Trem 65 gives single notes and chords alike a pleasing undulation that evokes vintage rock and roll.

Universal Audio UAFX Astra Modulation Machine Effects Pedal Cream
Universal Audio UAFX Astra Modulation Machine Effects Pedal Cream
Universal Audio UAFX Astra Modulation Machine Effects Pedal Cream

collapse expand iconFeatures

  • Three legendary modulation effects: Chorus Brigade—Chorus & Vibrato modes, Flanger/DBLR—Flanging & Doubling mode, Trem 65—Sine & Square modes
  • Knob, Preset and Tap + Preset modes
  • True/Buffered bypass
  • Free Phaser X90 and Dharma Trem 61 bonus effects at registration
  • Unmatched sonic authenticity
  • Rugged UA build quality
  • True bypass with silent switching
  • Optional buffered bypass
  • Preset mode
  • Configurable footswitch operation (Starlight and Astra models)
  • Optional preamp coloration on select effects
  • Chorus Brigade
    • Based on the classic CE-1, the Chorus Brigade tone emulates every inch of this legendary pedal, expertly capturing its legendary bucket-brigade circuit
    • Perfectly emulates the prized MXR studio flanger’s colorful, almost lo-fi-sounding "bucket-brigade" circuit—offering subtle thickening to whacked-out sci-fi effects
    Trem 65
    • Captures the balanced, warm tones of classic Fender blackface opto tube tremolo (called "Vibrato" on the amp)
    Bonus X90 Phaser & Dharma Trem 61 effects
    • Based on the classic MXR "script" and "block" Phase 90 effects, plus a unique "Dharma" Dynamic Harmonic Tremolo tone—available free at pedal registration

    collapse expand iconWarranty

    One year parts and labor warranty on all U.A. products and Kind of Loud products.

    Featured Articles