The M-100 consists of a piezo-ceramic pickup element that is embedded in an adjustable ebony replacement bridge. The pickup comes complete with a 1/4" external jack for easy mounting. When paired with an impedance-matching preamp, such as our Platinum Stage, Pro EQ or Powerjack, the full potential of the M-100 can be realized. Professional installation is recommended - we can do it! • MFSKU PRO-M10-0MA • UPC 605609104397