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1966      Len Davis invents the world’s first telephone balancing unit for use on BBC Radio’s first phone in programme ‘It’s Your Line’.

1966      Len Davis leaves BBC designs department to concentrate on public address designs and equipment manufacture. Company called Glen Sound Services.

1967      Design of audio mixers for use in schools.

1969      First Glensound design for the BBC – a distribution amplifier for Prince Charles’ investiture.

1971      First unitised desks designed and manufactured for the BBC.

1973      MX6 range of mixers first designed and manufactured for BBC.

1974      DK2/21 popular monitoring & output unit made for BBC.

1977      MICR (Mobile International Control Room) specialist commentators’ equipment built for BBC.

1978      Glen Sound Services becomes Glensound Electronics Ltd.

1980      Worlds first assignable mixer designed & manufactured for BBC Outside Broadcast.

1983      BBC mobile studios designed & installed.

1984      Coaxial Commentators equipment designed for BBC for use at Commonwealth Games in Edinburgh, Scotland, in 1986.

1986      Gavin Davis joins Glensound.

1992      Design & supply of broadcast & sound enhancement for House of Commons.

1994      Introduction of the World’s first portable battery operated ISDN. Codec

1994      Design & supply of broadcast & sound enhancement for House of Lords.

2001      Design & supply of broadcast & sound enhancement for Greater London Authority.

2002      Design & manufacture of 600 Commentators Positions for football World Cup in Korea and Japan.

2003      AES47 equipment designed & supplied to BBC.

2004      Popular stand-alone commentary system type GS-CU001 introduced.

2005      Len Davis semi-retires and Gavin Davis appointed Managing Director.

2006      Intelligent PA amplifier designed for installation in all HSBC branches.

2006      New GSLC intercom system designed and supplied for BBC local radio.

2007      Broadcasters’ mobile phone introduced.

2008      Eight thousandth ISDN Codec sold.

2009      The world’s first IP controllable digital commentary system, GDC 6432, is launched.

2010      First stage delivery of the next generation of the Glensound’s Meeting Room Audio System delivered to Committee Room 2 at the UK's House Of Lords.

2011      The World’s first hybrid commentary and intercom unit, the COIN GT-013 introduced in partnership with RTS/Telex.

2011      The World’s first digital stand alone commentary system, The Talent Box, launched.

2011      The World’s first broadcast HD Voice mobile phone range launched.

2012      Glensound wins the IABM Award For Excellence In Design & Innovation for the GS-MPI004HD HD Voice Broadcasters’ Mobile Phone.

2013      The world's first USB Commentary units introduced.

2014      The first Dante® network audio interface was launched.

2015      The world's first Dante® network audio commentary box was launched. 

2016      Design & supply of network audio sound enhancement for House of Commons.

2018      The next generation of mobile phone technology incorporating 4G launched.

2018      Dante® commentary and intercom units supplied for use at the commonwealth games in Australia. 

2019      The Divine Loudspeaker wins four Best of Show awards at NAB Las Vegas.      

2021      The Divine Loudspeaker wins the Innovation Award at PLASA 2021

2022      The GTM e-Sports interface launches as the worlds first truly dedicated gamers interface