This is essentially the guitar I learned to build when I studied with Maestro Schneider in 1983, although the design has evolved since that time.  It includes a trap-door, a laminated, band-pass bridge, and a metal bar through the neck to damp out-of-phase vibrations of the neck.  This guitar was made with an Englemann Spruce top, and Indian Rosewood back and sides.  The bindings are dyed poplar.  All the bindings and purflings and the rosette are made to the player’s specifications.  There is a very wide range of colors and designs available.