The Fishman Matrix Infinity is the worlds best-selling undersaddle pickup. It offers clear transparent tone dynamic string response and easy installation with soundhole-mounted Volume and Tone controls. The Matrix Infinity Mic Blend pickup and preamp system features a multi-position cardioid condenser mic capsule for increased air and tactile tone. The accessible voicing switch accommodates most guitar body sizes whilst being perfect in many different performance situations. You can monitor your usage using the integrated LED battery indicator meaning that you dont have to worry about running out of battery. The addition of a Blend control module on the treble side of the soundhole puts microphone blending at your fingertips. Features Endpin jack mounted preamp in a newly designed soft touch housing Multi-position soundboard mounted cardioid condenser mic capsule for increased airand tactile tone Microphone Blend control module discreetly mounted inside treble side of soundhole Stereo/mono output capability built in (option determined by cable choice) Redesigned enclosure for soundhole mounted Volume & Tone controls Unique scoop Tone control cuts mids while boosting treble and bass Relocated accessible voicing switch accommodates all guitar body sizes and performance situations Integrated LED low battery indicator located on internal preamp Solderless connections Includes steel-string and nylon-string control modules Professional installation is recommended Wide 1/8(3.2mm) format Standard overall length of 2.65″(67.3mm) will fit most guitars with string spacings of up to 2.5″ (63.5mm) Specifications Model: PRO-MAT-MBV Battery: 9-Volt (Not Included) Battery Life: 90 Hours