The Matrix Infinity pickup and preamp system is the newest version of our flagship Matrix Series and offers clear, transparent tone, dynamic string response, and ease of installation. Easily accessible soundhole-mounted Volume and Tone rotary controls allow the player to effortlessly make adjustments to their sound. Wide version. Completely redesigned active, endpin-mounted preamp. Soundhole-mounted rotary controls for Volume and Tone. Unique Tone control cuts mids while boosting treble and bass. Integrated LED low battery indicator. Features the world’s best-selling undersaddle pickup, the Acoustic Matrix. Switchable voicing to accommodate all guitar body sizes and performance situations. Solderless connections. Professional installation is recommended. Requires 9-volt battery (not included).