Private equity firm the Riverside Company has acquired DPA Microphones.

Riverside is now the majority shareholder and will also have representation on the DPA board.

DPA’s chief executive Christian Poulsen and chief finance officer Christian Hoff have retained their current positions along with a 40% shareholding in the Denmark-headquartered company.

DPA said the investment would allow it to “significantly expand its operation and grow the company at a much faster pace”.

“DPA is already a very successful and profitable company, which has been experiencing a 15% increase in sales, year on year, for the last five years,” said Hoff.

“With Riverside involved, we anticipate even stronger sales growth in the next five years.”

DPA’s product range includes headset, lavalier, instrument, and vocal microphones.

Poulsen said it would be “business as usual” for the company.

He said: “What has changed is our ability to capitalise on our current success and make this even more significant in the future.

“Riverside has an extensive network worldwide, many of whom are specialists in the audio industry and have deep technical knowledge and experience that we can exploit.

“This investment will allow us to develop new technologies and new products at a much faster pace. It will also allow us to move into new markets and attract more good people to our brand, while still properly supporting our existing customer and partner base.”

The Riverside Company is a private equity firm which has an international portfolio of more than 70 companies. It acquires businesses valued at up to $250 million.

It previously invested in German loudspeaker company Teufel, which was divested in 2010. It recently acquired US microphone manufacturer Blue Microphones.