Chessington-based Audiotonix provides mixing consoles, audio processing software and in-ear monitors for live events, theatre, recording studios and broadcasters. As lockdown set in, its 200-strong research and development team began working remotely. Last December, French private equity firm Ardian acquired a majority stake from counterparts Astorg, reportedly valuing the company at close to €1bn (£920m). The group was formed in 2014 as a combination of three of its divisions — DiGiCo, Allen & Heath and Calrec — and has since acquired four further brands. Under chief executive James Gordon, 48, sales rose 25% to £146.7m last year.
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