Pitch adjustment device for string instruments

A stringed musical instrument comprising:

• a head end and a tail end;
• a plurality of strings extending from said head end to said tail end, the tail end of each string being attached to a pitch adjusting device comprising:
• a pivotable string puller which pivots about a first axis, said string puller having a string support surface upon which the string rests, wherein pivoting of the string puller adjusts the pitch on the string;
• a pulley rotatably mounted on said string puller which rotates about a second axis which is spaced apart from said first axis;
• a cable wrapped around said pulley, said cable having a first side of the cable extending from a first side of said pulley and a second side of the cable extending from a second side of said pulley, wherein movement of said first side of the cable causes said pulley to move thereby causing the string puller to pivot in a first direction, and movement of said second side of the cable causes said pulley to move thereby causing the string puller to pivot in a second direction;
• a first actuator operably coupled to said first side of the cable, said first actuator configured to actuate to move said first side of the cable between a first state in which the first side of the cable is in a normal position such that said string puller is in a normal position and said string is tuned to an open pitch, and a second state in which the first side of the cable is in an adjusted position such that said string puller is in an adjusted position and said string is tuned to a first adjusted pitch different from said open pitch;
• a second actuator operably coupled to said second side of the cable, said second actuator configured to actuate to move said second side of the cable between a first state in which the second side of the cable is in a normal position such that said string puller is in a normal position and said string is tuned to an open pitch, and a second state in which the second side of the cable is in an adjusted position such that said string puller is in an adjusted position and said string is tuned to a second adjusted pitch different from said open pitch.