Product Information The Pinnacle of Classic Chorus, Flanging/Doubling, and Tube Tremolo Effects. Astra Modulation Machine captures the most authentic bucket-brigade chorus/vibrato, studio flanger/doubler, and tube-driven tremolo ever put into a stompbox. Powered by Universal Audio’s UAFX dual-engine processing, Astra provides the lush depth and warm movement of iconic analog modulation hardware — with the flexibility and control of a modern pedal. Chorus Brigade — Iconic Japanese ModulationAstra features a full circuit emulation of the legendary gray bucket-brigade chorus pedal, including the original preamp for rich harmonic saturation. Enjoy beautifully thick chorus textures and gentle wavy vibrato straight from the golden era of '70s modulation. Flanger/Doubler — A Rackmount Studio ClassicBased on a rare '70s rack flanger/doubler unit used in top recording studios worldwide, Astra recreates its sweeping flanger effects, dimensional doubling, and surreal motion — all meticulously modeled for authentic response and tone. Trem 65 — Authentic Tube Amp “Shake”Astra delivers a faithful recreation of the optical tube-driven tremolo found in classic American combo amps. From dreamy movement to hard, choppy pulses, every nuance of the 12AT7-driven circuit and photocell interaction is retained — including selectable sinusoidal or square wave behavior. Dual-Engine Stereo PowerWith two independent stereo processing engines, Astra can run modulation effects in true stereo for immersive, three-dimensional modulation textures that feel alive under your fingers. MIDI & App ControlConnect Astra to your MIDI setup via USB for preset recall, clock sync, and real-time control. Use the UAFX Control app (USB or Bluetooth) to adjust pedal behavior, customize footswitch modes, and manage presets with ease. Features Flagship UAFX modulation pedal with dual-engine stereo processing Authentic bucket-brigade chorus/vibrato circuit emulation Complete model of rare '70s studio flanger/doubler hardware Tube-driven optical tremolo recreation from classic American amplifiers Silent switching with preset footswitch mode for instant recall UAFX Control mobile app for bypass mode selection, preset management, and Tap Tempo control Includes free Phaser X90 and Dharma Trem 61 effects upon registration UAFX 2.0 firmware adds MIDI control and enhanced Bluetooth functionality Power Power Requirements: Isolated 9VDC, center-negative, 400mA minimum (sold separately) Inputs Inputs: 2 x ¼” TS (right input supports stereo connections) Outputs Outputs: 2 x ¼” TS (right output supports stereo connections) Connectivity USB: USB Type-C for firmware updates and USB MIDI control Dimensions Height: 2.56” (6.5 cm) Width: 3.62” (9.2 cm) Depth: 5.55” (14.1 cm) Weight: 1.24 lbs (0.567 kg)
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