Eventide Eventide is an American audio company best known for their signal processors for both live and studio situations. Apart from their audio gear, Eventide has created moving map displays for small airplanes. Average User Rating 0 0 votes Please sign in to rate. Your Rating 0 Contact Phone Number: +1 (201) 641 1200 Address: Eventide Inc. 1 Alsan Way Little Ferry NJ, 07643 U.S.A. Email: support@eventide.com Online: History replace