Conceived from the award-winning Astra Modulation Machine, Brigade Chorus & Vibrato gives you the warm analog modulation effects of the Boss CE-1 Chorus Ensemble* and the fat tone of its iconic preamp, in a compact stompbox. Authentic emulation of iconic 1976 Boss CE-1 Chorus Ensemble* Perfectly captured bucket-brigade circuit for thick chorus and vibrato effects Stunning emulation of vintage analog preamp for fat tones and effects Volume control true/buffered bypass, preamp off/on Timeless UA design and craftsmanship, built for decades of dependable performance