The Great Talking Box Company

Address: 2528 Qume Drive, Suite 14
San Jose, CA 95131
Phone: (408) 573-7800 Fax: (408) 5738600 Email:

The eTalk-GT is the culmination of three decades of technology development. The Great Talking Box Company (GTB) was founded in 1996 by Ed Kandefer, a pioneer in developing augmentative and alternative communication devices. Mr. Kandefer has over 29 years of experience in speech synthesis and speech recognition systems. He created the first digital speech device for augmentative communication in 1981 which helped establish the AAC industry. Mr. Kandefer is a graduate of Arizona State University and holds a Bachelor of Science degree in Electrical Engineering.


GTB is located in San Jose, California, the heart of Silicon Valley where products are manufactured by Sym Systems, the parent company.

GTB is a proud member of the following associations:

ASHA (American Speech and Hearing Association)
ATA (Alliance for Technology Access)
ATIA (Assistive Technology Industry Association)
ISAAC (International Society for Augmentative and Alternative Communication)
RESNA (Rehabilitation Engineering and Assistive Technology Society of North America)

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