Telephone: Primary: 617-965-6984 Office address: 163 America Blvd, Ashland, MA 01721-1869 Mailing address: 163 America Blvd, Ashland, MA 01721-1869 Electronic mail: Calibrations: Calibrations@PerfectHomeTheater.com Sales: Sales@PerfectHomeTheater.com Customer Support:  Support@PerfectHomeTheater.com General Information: info@PerfectHomeTheater.com Webmaster: Webmaster@PerfectHomeTheater.com