Systech Envelope Follower 1976

A legendary piece of gear from the golden age of progressive rock. This 1976 Systech Envelope Follower delivers that warm, organic envelope-filter magic that defined the sound of the '70s. Dial in lush auto-wah textures or use the decay control to lock in fixed-wah tones that sit perfectly in a mix. Built by ex-Gibson craftspeople who left the company in the early '70s, this pedal became a studio and stage favorite for icons like Frank Zappa and YES. Genuinely rare and sonically timeless—a collector's piece that still inspires modern players chasing that analog warmth.