Fishman PRO-MAN-INF Matrix Infinity Narrow

Completely redesigned active, endpin-mounted preamp
Soundhole-mounted rotary controls for Volume & Tone
Unique Tone control cuts mids while boosting treble and bass
Integrated LED low battery indicator
Features the worlds best selling undersaddle pickup, the Acoustic Matrix
Switchable voicing to accommodate all guitar body sizes & performance situations
Solderless connections
Professional installation is recommended
Requires 9V battery (not included)
Available in two saddle slot widths: wide  (3.2mm) format or narrow (2.3mm) format
Guitar versions have a standard overall length of (67.3mm) will fit most guitars with string spacings of up to (63.5mm)
Ukulele version (PRO-MAK-INF) has a standard pickup length of  (50.8mm) and will fit most ukuleles with up to (47mm)