The Universal Audio Astra Modulation Machine boasts powerful dual-processor architecture for the most sonically authentic classic Chorus, Vibrato, Flanger, and Tremolo effects ever available in a stompbox. From spacey studio flanger tones of the 1970’s, to gritty bucket-brigade chorus and luscious opto tube tremolo, the UAFX Astra Modulation Machine puts three iconic vintage effects at your feet, in a beautifully-crafted pedal that’s built to last decades. The Universal Audio UAFX Astra Modulation Machine includes 3 Timeless Modulation Effects: Chorus Brigade: Classic ‘70s analog bucket brigade chorus with additional Vibrato mode. Flanger/DBLR: Studio flanger/doubler tones modeling legendary rack effects units. Trem 65: Perfectly-emulated opto tube tremolo derived from iconic blackface amps of the mid-1960’s. It also includes some bonus effects: Free Phaser X90 and Dharma Trem 61, downloadable at registration. Key Features: Flagship modulation pedal with powerful dual-processor UAFX engine Three timeless modulation effects, with secondary modes and settings Simple Live/Preset modes for instant recall of your favorite sound Additional downloadable effects by the world-renowned UAD algorithm team True or buffered bypass,* silent switching Classic UA analog design and craftsmanship, built to last decades Power requirements: Isolated 9VDC, center-negative, 400mA minimum** Inputs: 2 x ¼” TS (input 2 for stereo connections) Outputs: 2 x ¼” TS (output 2 for stereo connections) USB Type-C for updates via computer