Don has been building musical instruments since 1977. Here's his prototype 5-string e-mando, which is currently being used in the studio and on the road by Andrew Hendryx of the NYC band Yarn. Don writes: "It was built as a professional-grade instrument for the discriminating player/performer. The fanned-fret system provides a better string tension balance across all five strings and allows for better fingering ergonomics. The instrument is available in many different combinations of wood, finish, and electronics."
Here are the specs for the instrument pictured:
366 Lakeshore Drive
Hewitt, NJ 07421