The Twin Spot Internal is a twin-head piezo transducer that is designed for internal mount in acoustic guitars and other acoustic instruments.
It can be better suited to larger ukes than the Aloha Twin, and also has longer cables.
The twin-head system has distinctive advantages towards the single-head transducer. The positioning at 2 spots results in a more balanced sound structure. This makes it a good option for ukes because each transducer can be mounted between a pair of strings - ideally under the line of the saddle or slightly forward of it. The frequency range is also broader than a single-transducer system. The small heads with only 1/2" diameters allow an unobtrusive installation. In addition, small areas at the instrument can be reached.
The Twin Spot Internal comes with an endpin jack for internal mount. The jack can be mounted from the outside so no soldering is necessary.