Built around a stack of buket brigade circuits with an armada of tweakable parameters that summon a world of swirling, pulsing tone, the Suhr Alexa is a powerhouse chorus/vibrato pedal. The dual-channel design, six selectable waveforms on each channel, and nuanced controls let you dial in whirring rotaries, lush choral swells, modulated pulses and more with easy switching between two of your favorites. Throw in real-time variable speed control via an external tap tempo or expression pedal for carve out a complete world of signature sound.