Product Overview

Decades of Timeless Studio Analog Swirl and Motion Under Your Boots

Universal Audio has long been the industry gold standard in emulation hardware and digital software processing. The Universal Audio UAFX Astra Modulation Machine packs that uncompromising DSP power into a road-ready, heavy-duty stompbox. This pedal is designed for musicians, sound designers, and studio producers who refuse to settle for generic digital snapshots or flat, static modulation algorithms.

At the core of the Astra Modulation Machine is a powerful dual-engine UAFX processor. It runs independent stereo instances of each modulation type simultaneously, generating massive three-dimensional spatial fields, deep dimensional chorusing, and hypnotic panning textures. Whether you want the thick, syrupy bucket-brigade chorus of a mid-70s floor enclosure, the metallic jet-stream woosh of a rare studio flanger, or the warm, thumping opto-tube bias shake of a vintage American amp, the Astra Modulation Machine responds with unparalleled audio fidelity and organic musicality.

Product Description

Three Definitive Modulation Engines and Custom Preamp Voice Profiles:

The Astra Modulation Machine comes equipped with three masterfully modeled modulation engines, with a fourth and fifth available immediately upon hardware registration:

• Chorus Brigade: A comprehensive, component-level emulation of the legendary late-1970s Japanese bucket-brigade gray enclosure chorus/vibrato pedal. It accurately replicates the rich, analog bucket-brigade delay lines and subtle pitch wobbles. Using the A/B variation switch, you can toggle between lush, wide stereo Chorus mode or deep, expressive Vibrato. It also models the unit's highly coveted discrete analog input preamp stage for extra warmth and thick compression.

• Flanger DLR: Recreates the metallic, sweeping textures and deep dynamic tracking of a world-famous late-1970s studio analog bucket-brigade flanger. This mode provides unmatched zero-point flanging effects, jet-engine sweeps, and watery textures, capturing the unpredictable clock-rate behaviors and analog clipping characteristics of the vintage circuit.

• Trem 65: A goldmine of mid-1960s American blackface amplifier history. This bit-for-bit optical emulation captures the exact throbbing, photographic-resistor dynamic wave shape and organic bias-shifting compression of a real tube-driven amp tremolo tank, creating an incredibly musical volume pulse that responds gracefully to your pick attack.

• Bonus X90 Phaser & Dharma Trem (Free on Registration): Registration immediately unlocks a pristine emulation of a classic script-logo 1970s single-knob analog phaser for sweeping swirling phase shift, alongside a boutique dynamic harmonic tremolo engine that blends phase shifting and volume modulation for deep, hypnotic texture.

Advanced Controls, Live/Preset Modes, and Secondary Settings:

The physical control interface provides instant access to crucial sound-shaping parameters. The Speed and Depth controls regulate the LFO matrix, while the Intensity knob dials in dedicated wet/dry blending, feedback, or regeneration depending on the active modulation effect.

The dual-footswitch design enables seamless operation on stage. The right footswitch acts as a dedicated Preset recall switch (or can be configured for tap tempo subdivision behavior depending on the algorithm), while the left switch engages the effect. With Live/Preset modes, you can toggle between your current physical knob positions and a saved favorite preset instantly. Thanks to the massive internal processing overhead, switching between modes happens with dead-silent relay switching and full seamless tracking transition.

Modern Connectivity and App Integration:

The Astra Modulation Machine features true stereo input and output ports with automatic detection, ensuring a massive stereo field or perfect routing into a wet/dry/wet live amplifier configuration. It retains an analog dry path to ensure your raw guitar tone remains completely uncorrupted.

Equipped with a built-in Bluetooth chip and a rear-panel USB-C port, the pedal connects effortlessly to the UAFX Control mobile and desktop app. The app unlocks advanced under-the-hood global settings, provides programmable MIDI clock sync synchronization, changes bypass routing (True Bypass vs. Buffered Trails), and lets you customize the dual footswitch behaviors.

Key Features

• UNCOMPROMISING MODULATION EMULATION: Next-generation component modeling capturing legendary vintage chorus, studio flanger, and optical amp tremolo units.

• DUAL-ENGINE PROCESSOR: Separate stereo instances of each modulation type run simultaneously for immense spatial depth and wide acoustic imaging.

• VINTAGE PREAMP COLORATION: Recreates the exact input gain behavior, harmonic saturation, and subtle tone thickening of vintage hardware circuits.

• LIVE & PRESET SELECTION: Instantly store and recall your favorite custom patch with an on-the-fly hardware toggle mode.

• TRUE STEREO ROUTING MATRIX: Full stereo input and output ports for wide spatial multi-tracking or complex stereo wet/dry pedalboard configurations.

• ANALOG DRY-THROUGH: High-headroom circuitry ensures your dry analog guitar signal passes through completely uncorrupted.

• BLUETOOTH UAFX APP LINK: Wirelessly deep-dive into secondary settings, swap bypass modes (True/Buffered), and download the bonus X90 Phaser & Dharma Tremolo models.

Technical Specifications

What’s Included in the Box

• 1 x Universal Audio UAFX Astra Modulation Machine Effects Pedal

• 1 x Official Universal Audio Quick Start Setup Guide & Control Layout Map

• 1 x Factory Serial Registration Card & Official Hardware Warranty Documents