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Sound United (formerly DEI)

Year of Investment:





Vista, CA





Sound United has a broad portfolio of high-performance home audio products, including speakers, surround sound systems, sound bars, wireless music systems, amplifiers, turntables and headphones. Its products are marketed under several well-known audio brands – Denon, Marantz, Polk Audio, Classé, Definitive Technology, HEOS and Boston Acoustics. Sound United has operations in Southern California, Baltimore and Montreal, as well as in Europe and Asia, and sells to consumers in more than 130 countries.

Charlesbank Investment

In June 2011, Charlesbank purchased DEI Holdings, parent of Sound United, with a significant co-investment from the existing management team. To fund the acquisition, Charlesbank also arranged the debt financing, which included a revolver as well as first and second lien term loans. In 2020, we helped fund Sound United’s strategic acquisition of UK-based B&W Group.


Kevin Duffy

Key Team Members
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June 22, 2011

Charlesbank Capital Partners Announces Investment in DEI Holdings

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