On January 5, 2017 owners of Denon AVR-X6300H AVRs, Denon AVR-X4300H AVRs, Marantz SR7011 AVRs, and Marantz AV7703 pre-pros will have the option of upgrading their equipment to support the Auro-3D immersive audio format for $199. Auro-3D is like the better …
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