1. Proficient South 200 Merrimack St, Haverhill, MA 01830 Coordinate: 42.77385,-71.08131 Phone: (978) 891-5850
2. Proficient Recording Studios 200 Merrimack St, Haverhill, MA 01830 Coordinate: 42.77385,-71.08131 Phone: (978) 377-7691