K&K pickup and mic systems can be used on a host of other instruments. Some of the more popular ones are listed here.
Tenor guitars are growing in popularity. The usual option is the 2-head Twin Spot bridgeplate transducer, although other hybrid pickup/mic systems can be supplied if preferred.
For cittern or bouzouki type instruments I usually recommend the Twin Spot Internal for smaller-bodied instruments and the Pure Archtop for larger/deeper/archtop instruments. If you prefer an externally mounted system for a folk instrument then the Twin Spot (External) or the Floating Bridge is the way to go.
A piano system is also listed here. It was developed in cooperation with the renowned German piano manufacturer Seiler Pianos.
There are two violin systems. The Violinissimo uses a tailpiece-mounted jack socket, whilst the Violinissmo Pro uses a side-mounted carpenter jack system.
Some of these systems are special order from K&K in Oregon - allow 20-25 working days for delivery.
Also see multi-use systems listings.