Universal Audio


The Astra Modulation Machine is a flagship, no-compromise guitar effects pedal that establishes a new benchmark for classic modulation effects, with sonic authenticity far beyond many other stompboxes. The Astra Modulation Machine features three legendary effects, stereo/dual mono operation, true bypass with silent switching, an optional buffered bypass via software, analog dry-through, and a Preset Mode to recall stored settings.
  • 3 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
        One year parts and labor warranty on all U.A. products and Kind of Loud products.