The Denon AVR-X3400H, AVR-X4400H, and AVR-X6400H home cinema amplifiers are available in USA via the Amazon online store. All three Denon HEOS AV receivers now work with Amazon Alexa and support major audio formats, including Dolby Atmos and DTS:X. Two high-end amplifiers also sport Auro-3D, which is the next generation three-dimensional audio standard. It provides a realistic life-like sound experience, …
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