This is an integrated violin and pickup system.It was built by the Danish luthier Richard Murholt in 1988.
Murholt has built instruments for some of the most famous Danish jazz fiddlers.
The pickup system was based on a design called Elkit which Murholt crafted into the instruments he built.
Elkit is a electrodynamic pickup and works much like a ribbon microphone, with the strings being the ribbon.
Murholt refined the Ekilt system and added a possibility of balancing the strings with 4 small potentiometers and he added a new transformer to the preamp.