Experience the cutting edge of home theater with the 7.2-channel TX-NR646 Network A/V Receiver, the first in its class to feature the revolutionary DTS:X™ and Dolby Atmos® multi-dimensional audio formats.

The Onkyo TX-NR646 is powerful, balanced and dynamic, and it's been nothing less than a pleasure to use and listen to. The only thing that we can really complain about is that the AccuEQ could use some improvements. The fact that it also offers HDCP 2.2 and DTS:X means that it has very few competitors in this price class.

2015年5月12日 · Experience the cutting edge of audio with the 7.2 Ch. TX-NR646 Network A/V Receiver, the first in its class to feature the revolutionary dts:X and Dolby Atmos multi-dimensional audio formats. Onkyo's high-current amplification system drives your speakers with maximum impact and fidelity at 170 watts per channel.

2015年7月14日 · The fully-loaded Onkyo TX-NR646 delivers cutting-edge technologies such as both Dolby Atmos and DTS-X surround formats, in addition to AirPlay, Wi-Fi and Bluetooth. Its sound quality is excellent...

2022年11月2日 · 4K video content and two HDMI outputs for video in separate rooms. The TX-NR646’s high-grade 384 kHz/32-bit AKM DAC not only. brings movies to life, but your Hi-Res and streamed music as well. Conveniently stream music over built-in Wi-Fi®, Bluetooth, AirPlay.

Here is the link https://onkyo.com/tx-nr646 to the product page that has the selection for the firmware. In there provides the instructions along with the firmware update. The last update was 12/2020. However, if your having issue with the unit then the unit would have to go into service https://onkyo.com/service-centers.

Product Categories TX-NR646 TX-NR646- Owner's Manual

View and Download Onkyo TX-NR646 user manual online. TX-NR646 receiver pdf manual download.

Onkyo TX-NR646 was introduced in 2015. It is equipped with 7 channel amplifier with 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz video signal. We evaluated the a/v receiver and gave 82 overall score out of 100.