Introducing the groundbreaking TX-NR646 and TX-NR747 network A/V receivers from Onkyo USA deliver best-in-class reproduction of new DTS:X™ and Dolby Atmos® object-based audio formats for an exhilarating multidimensional entertainment experience at home.

The TX-NR646 generates an impressive 170 W/Ch of power while the TX-NR747 outputs 175 W/Ch and is THX® Select2™ Plus certified to guarantee theater-reference volume with minimal distortion. Both receivers are fitted with Dual 32-bit DSP Engines and a new 384 kHz/32-bit AK4458 DAC from Asahi-Kasei for transparent reproduction of music and soundtracks.

Joining next-generation audio decoding are eight 4K/60 Hz-ready HDMI® inputs and two outputs, including dedicated HDCP 2.2-compliant terminals for 4K streaming and UltraHD Blu-ray with Dolby Atmos or DTS:X audio (due later this year). High Dynamic Range (HDR) color and 21:9 cinema-aspect are also supported.

Onkyo’s exclusive discrete high-current amplification system enables unrivaled control of the speaker drivers for our trademark clarity, timing, and wide-spectrum dynamics, ensuring an emotionally captivating performance every time.

Both receivers are set up for wireless audio with Wi-Fi®, AirPlay, and Bluetooth. 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 Spotify app is also supported, while users can enjoy 192/24 FLAC and DSD 5.6 MHz Hi-Res Audio files via DLNA, or use the phono equalizer input to connect a turntable.

Operation of both products is clear and simple. Updated AccuEQ room calibration quickly and accurately equalizes the speaker system for clear and balanced surround-sound on initial setup, with Quick Setup function making everyday operation a breeze.

The TX-NR646 and TX-NR747 are engineered from the ground up to bring next-generation DTS:X and Dolby Atmos audio and UltraHD video to life, transforming everyday entertainment into an unforgettable experience.

DTS:X and Dolby Atmos use revolutionary studio mixing techniques that utilize “sound objects” versus specific channels, that accurately match the sound to their corresponding visual objects as they pass above and around the audience with breathtaking clarity and realism–such as the trajectory of a bullet, a helicopter, or falling rain, for example.

With a firmware update coming later in the year to add DTS:X, DTS:X scales a TX-NR646 or TX-NR747 home theater configuration up to 5.1.2 channels with enhanced flexibility for height-channel placement, including in-ceiling speakers, front/rear height channels, and even Dolby Atmos-ready speaker systems.

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.

Further, DTS:X incorporates Neural:X, the latest spatial remapping technology from DTS, which provides a fully immersive output for all types of source content. This includes DTS bit-streams, non-encoded (PCM) data and Neural-encoded radio broadcasts of major global sporting events, leading to a more thrilling sense of atmosphere regardless of the original source format.

“We’re confident that DTS:X represents the most convenient and effective way for movie lovers to experience immersive multidimensional sound,” said DTS EVP and chief marketing officer Kevin Doohan. “Introducing next-generation home entertainment to consumers is only possible when hardware and software partners collaborate closely. We can’t wait for Onkyo’s customers to experience the power and realism of DTS:X in their homes.”

The TX-NR646 will be available in early June with a suggested retail price of $699 while the TX-NR747 will be available in late June at a suggested retail price of $999.

About Onkyo

Since 1946, Onkyo has been passionately committed to developing audio products that deliver uncommon performance, quality, and value. Bundling proprietary technologies and innovations with other sound-enhancing exclusives, Onkyo continues to create award-winning products that are lauded by industry-leading publications. The company’s philosophy is to deliver products that are superbly designed and built to a consistently outstanding standard of excellence. The results can be seen in the obvious quality of any Onkyo-manufactured product, even before it’s turned on.

For more information, visit the Onkyo website at or follow Onkyo at

About DTS:X

DTS:X is the next-generation object-based, multi-dimensional audio technology from DTS. Unbound from channels, DTS:X conveys the fluid movement of sound to create an incredibly rich, realistic and immersive soundscape—in front of, behind, beside and above the audience—more accurately than ever before.

DTS:X offers the ability to automatically adapt the audio to the speaker layout that best fits the space, from a television’s built-in speakers to a home surround theater system to a dozen or more speakers in a commercial cinema.

For the most engaging experience on mobile devices, DTS Headphone:X delivers a spatially distinct, immersive audio experience over any set of headphones. With DTS technology, even the smallest screens will sound huge. Immerse yourself at and