The Robotalk2 sports two individual envelope filter channels. Each channel is independently voiced and can be preset for different playing style; slow acoustic-like attack,percussive, high speed open-close and many more. Blend each channel together for additional tone or use the internal dip switch to customize your sounds appropriately. There's a switchable input pad for accommodating both active and passive signals. Says guitar ace Paul Jackson Jr. "The new Robotalk 2 is great!! You've got the classic 70's style ALL ANALOG filter sound, and you've got 2 discrete channels of it. What else do you need, except maybe Parliment Funkadelic??"