Unlike typical undersaddle acoustic guitar pickups that are dependent on string compression for their sound, the Stage Pro was engineered to mirror the soundboard’s actual movement as you play. At the heart of the pickup, a flexible film sensor only 2 thousands of an inch thick picks up the guitar’s most delicate nuances. Tracking the motion of the top rather than a direct string attack suppresses “quack” caused by compression and unlocks the Stage Pro’s unrivaled dynamic range.