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A Little About Us

Previously Stonewood Audio and before that, Metroaudio; Granite Sound continue to manufacture the high quality, all metal theatre intercom systems so well known in the industry.

From Theatre and School Intercom starter systems to full systems into high end theatres in the West End. The Granite Sound range can be expanded endlessly to suit the needs of the customer.


Granite Sound’s theatre intercom systems are compatible with industry standard three-wire communication systems and are available with a wide range of headsets and belt packs.

Our products are fully compatible with Tecpro, Clearcomm etc. This means customers can, for example, simply add a heavy duty GS-CBP1 to their existing system with no hassle!

Granite Sound has established a reputation for reliable, high quality theatre intercom systems. With an industry recognised, unbeatable service record, Granite Sound can offer excellent knowledge and support every step of the way.

We seek to achieve satisfaction and long-standing relationships with each of our customers through reliability, flexibility, professionalism, and expertise. Our expert team have been involved in the developing audio industry since the 1970s, their high level of experience enables them to provide in-depth advice on all aspects of audio systems.

High Quality

Our systems are being used into some of the most iconic theatres in the world. Some products almost 30 years old and still in perfect working order.


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