Earth Sound Research was located in what New York county?
Earth Sound Research Earth Sound Research was a musical amplification firm based in Farmingdale, New York that made bass and guitar amplifiers in the 1970s. They also made PA mixers/power amps, keyboards and stand alone reverb units (solidstate).
Rockland, New York Rockland is a town in the northern part of Sullivan County, New York, United States. At the 2010 census, the population was 3,775.