Denon, Marantz Add Auro-3D Surround to Select Components D+M Group is making Auro-3D surround processing available for the first time as a $200 firmware upgrade available today for four high-end networked audio components from Denon and Marantz.By RS Staff Published: March 29, 2016 ⋅ Updated: April 15, 2019 D+M Group is making Auro-3D surround processing available for the first time as a $200 firmware upgrade available today for four high-end networked audio components from Denon and Marantz. The components consist of two Denon audio/video receivers (AVRs) – the AVR-X4200W and the AVR-X6200W – plus two Marantz components. The Marantz products receiving the upgrade are the SR7000 AVR and the AV7702mkII preamp surround processor. The Marantz components and the Denon AVR support Auro-3D surround in up to 10.1-channel speaker configurations, while the Denon AVR supports Auro-3D in up to 9.1 channels. All four D+M components also feature Dolby Atmos and are upgradable to DTS:X surround with a free firmware upgrade that is already available. D+M said the Dolby Atmos, DTS:X and Auro-3D surround formats are compatible with the following configuration of height speakers: two height speakers high up near the ceiling above the main left-right speakers, plus two back-height speakers on the wall near the ceiling. The D+M components will drive the four height speakers plus a traditional 5.1-speaker surround-sound speaker layout. Three of the four components also support Auro’s optional in-ceiling “Voice of God” speaker. This story appeared initially in sister publication TWICE. Click here to read the original post in full. SubscribeFor more stories like this, and to keep up to date with all our market leading news, features and analysis, sign up to our newsletter here.