For sound examples and specs watch the Warwick Sound Examples: The Thumb NT 6-String with Andy Irvine:
https://www.youtube.com/watch?v=-CKxRGaF8Rk
Music: Through The Fog by Combinator
For more information on the instrument go to:
https://goo.gl/nQrjei
Watch the "Making Of" this instrument here:
https://www.youtube.com/watch?v=qJTq3rHVA08
http://www.warwick.de
http://www.framus.de