Check the listing for details. UAFX ASTRA Modulation Machine Guitar Multi-Effects Pedal. Condition: Open box. Listed at 349.89 USD. The Pinnacle of Classic Chorus, Flanging/Doubling, and Tube Tremolo EffectsTaking you deep down the rabbit hole of classic analog modulation, UAFX Astra Modulation Machine serves up the most sonically authentic bucket-brigade chorus/vibrato, studio flanger/doubler, and tube-driven tremolo effects ever placed into a single stompbox.Built upon Universal Audio's powerful UAFX dual-engine processing and unmatched levels of quirky analog realism, Astra delivers richly addictive vintage modulation, beautifully crafted to inspire you for decades.Chorus Brigade: Iconic Japanese ModulationUpon its release in 1976, this legendary gray bucket-brigade stompbox changed the sound of music with its thick, luxuriant chorus and wavy vibrato. Astra's Brigade Chorus mode gives you the most complete circuit.