Originally Posted by: Sgt TeeThis is a old post but I think he is talking about something like this holder, I don't know what it is myself
https://www.youtube.com/watch?v=6tSfDcN_qXg

Actually thats a pick up to use with a guitar synth.

Roland GR-20 Guitar Synthesizer with GK-3 Divided Pickup to be precise

http://www.musiciansfriend.com/amplifiers-effects/roland-gr-20-guitar-synthesizer-with-gk-3-divided-pickup