Extended Range (ER). 2-7-19-18-7; very large, ultimate 5th interval dulcimer; over 4 octaves; 3-1/2 octaves chromatic; 1.1" string course spacing; 48″x22″x5″; 17 lbs. with carbon back; amazingly rich tone & lush bass.
The current ER is lighter and more portable than my early ERs. With carbon fiber back and chassis, starts about $4200. Will fit in a Dusty Strings C600 case. Current versions have Super Bass playable on both left and right.