The K&K Mandolin Twin is a dual-head retrofit mandolin transducer. It reproduces the original mandolin tone with very natural tone quality and it is highly feedback resistant.  

The Mandolin Twin Internal is a fully internal pickup system. Both the transducers and the endpin-jack are mounted inside the mandolin. The transducers are attached with double-sided adhesive tape, providing a robust installation with minimum sound interference. Installation of this system should be done by an experienced luthier or mandolin tech.

With acoustic amps, the Mandolin Twin Internal works very well in passive mode. To connect to a PA system, a good preamp goes a long way.