FISHMAN M-200 MANDOLIN PICKUP PRO-M20-OMA - The M-200 is identical to the M-100, but includes a Carpenter style 1/4″ output jack that mounts on the side of the instrument - Features a piezo-ceramic pickup element embedded in an adjustable ebony replacement bridge - Designed for all archtop-style mandolins - An impedance-matching preamp is recommended, but not required - Professional installation recommended