<p>Denon&nbsp;has invited all 3D audio formats to an AV party &ndash; plus Richard Stevenson</p>

- Richard Stevenson

EVOLUTION, NOT REVOLUTION, is a good way of describing Denon’s AVR-X6400H. This £2,100 AV receiver takes last year’s very fine AVR-X6300H, adds a few features, sprinkles in some new components and ices the cake with Auro-3D support straight out of the box.

The engineering and cosmetic design are untouched. On the outside it’s a black box, with two big knobs, blue-tinted display and a flap concealing buttons and sockets. That'll be an AVR then. Inside is Denon’s Monolithic amp layout, custom transistors and a power output claimed to be 140W for all of its eleven channels into an 8 ohm load.

Around the back of the receiver's full-width, full-height chassis are Bluetooth and Wi-Fi 2.4/5GHz aerials, as well as an Ethernet port for networked features. These naturally provide full integration with Denon's HEOS multiroom hardware. The X6400H also proffers AirPlay, 'net radio and built-in streaming services including Deezer, Spotify and Tidal.

HDMI connectivity is outstanding. With eight HDMI inputs and three outs you are unlikely to be left wanting. All are HDMI 2.0/HDCP 2.2.

Dolby Atmos 7.1.4, DTS:X and Auro-3D are all catered for by an incredibly flexible speaker positioning setup. In fact, from 7.1.4 to triple layer Auro, there is quite a bewildering array of speaker combinations in between. You also ge

This story is from the January 2018 edition of Home Cinema Choice.

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