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The new Onkyo TX-NR646 and TX-NR747 AV receivers support DTS:X and Dolby Atmos formats

By Ng Chong Seng - on 4 Aug 2015, 7:30am

The new Onkyo TX-NR646 and TX-NR747 AV receivers support DTS:X and Dolby Atmos formats

In other AV receiver news, Onkyo has just announced that its new TX-NR646 and TX-NR747 (pictured above) AV receivers are now available in Singapore. The headline feature for both 7.2-channel receivers is that they support Dolby Atmos and DTS:X formats (the latter via a firmware update).

For the uninitiated, DTS:X and Dolby Atmos use studio mixing techniques that utilize “sound objects” versus specific channels to accurately match the sound to their corresponding visual objects as they pass above and around the audience. DTS:X scales to any home theater configuration up to 7.1.4 channels with enhanced flexibility for height-channel placement, including in-ceiling speakers, front/rear height channels, and even Dolby Atmos-ready speaker systems. Furthermore, dialog in DTS:X can be mixed as a discrete sound object, so users can raise or lower it independent to other elements in DTS:X soundtracks, resulting in dramatically improved audibility than is currently possible. DTS:X also incorporates Neural:X, the latest spatial remapping technology from DTS, which provides a fully immersive output for all types of source content.

Support for the new formats aside, the new TX-NR646 is capable of generating 160W per channel of power, while the TX-NR747 outputs 175W per channel and is THX Select 2 Plus-certified to ensure theater-reference volume with minimal distortion. Both receivers are fitted with dual 32-bit DSP engines and a new 384kHz/32-bit AK4458 DAC from Asahi-Kasei.

There are also eight 4K/60Hz-ready HDMI inputs and two multi-zone outputs, including dedicated HDCP 2.2-compliant terminals for 4K streaming and UltraHD Blu-ray with Dolby Atmos or DTS:X audio support (due later this year). High dynamic range (HDR) color and 21:9 cinema-aspect are also supported.

Both receivers are set up for wireless audio with support for Wi-Fi, AirPlay, and Bluetooth connectivity. Onkyo’s new Remote App 3 streams digital music stored on mobiles while accessing a generous selection of Internet radio and on-demand music services. Streaming via the Spotify app is also supported, and users can enjoy 24/192 FLAC and DSD 5.6MHz hi-res audio files via DLNA, or use the phono equalizer input to connect a turntable.

Both the Onkyo TX-NR646 and TX-NR747 receivers are now available in Alpha Audio, Audio House, Courts, and Harvey Norman. The former goes for S$1,299; the latter S$1,699.

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