Marshall Regenerator RG1 effects pedal - stereo modulation with expression pedal connection.RG-1 Regenerator The Regenerator is a chorus, a flanger and a phaser all in one sturdy metal stomp box. A stereo modulation pedal, the Regenerator features a diverse range of six different modes for you to explore, sure in the knowledge that the tone-preserving passive bypass is just a footswitch away. From the sweeping detuned tones of the vintage chorus to a phaser that swells with energy, listen as the Regenerator entwines itself around your sound. With full control over the speed, depth and regeneration, it’s every modulation pedal you’ll ever need. - See more at: http://www.marshallamps.com/product/pedal/rg-1-regenerator/#sthash.UaRH4cIL.dpuf