D&M Holdings

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Sonos Defeats Denon HEOS Again: Understanding the Patent Lawsuits

Sonos seeks injunction and double damages for D&M’s ‘willful infringement’ of Sonos patents in the Denon HEOS line. Judge invalidates another D&M patent.

Julie Jacobson · February 25, 2018

Sound United: Heos vs. Play-Fi Debate Continues after D+M Group Merger

Sound United still defining sales roles, wireless platforms for Polk, Def Tech with D+M Group brands Boston Acoustics, Marantz and Denon.

Joe Palenchar · May 16, 2017

D+M Group Weighs In on its Dolby Atmos vs. DTS:X Testing

Dolby Atmos and DTS:X aren’t as different as you might think, according to D+M Group (Denon, Marantz, Boston Acoustics, HEOS, et al), one of the first component manufacturers implementing the both the surround sound formats.

Chuck Schneider · March 08, 2016

The 20-Year Battle Behind Dolby Atmos vs. DTS:X

Searching for a winner in consumer electronics’ latest format skirmish between Dolby and DTS isn’t easy.

Chuck Schneider · March 03, 2016