RARE- JSH rockbox model RBX-2. Very Good condition for age.Quality multi-effects unit .1987. Basically, a JHS close-cousin /copy of the classic 'Rockman' type device as used by Tom Scholz (Boston) and others in this era. Great for clean / chorused and compressed dirty sounds. No corrosion in the battery compartment.No 16v plug or box.It has not been used in 5 years so is untested.