What year was Onkyo TX-NR646 released?
Onkyo TX-NR646 was introduced in 2015.
Is Onkyo TX-NR646 4K?
Two Wi-Fi antennas are on the rear of the receiver for optimized signal range. The Onkyo TX-NR646 has eight HDMI 2.0a inputs for interfacing audio and video sources, and the pass-through of 3D and 4K video sources.
Does the Onkyo TX-NR646 support Dolby Atmos?

The Good. 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.
How do I update my Onkyo nr646 firmware?
Update
- After pressing RECEIVER on the remote controller, press SETUP. The Setup menu is displayed on the TV screen.
- With the cursors, select “8. Miscellaneous” – “Firmware Update” – “Update via NET”, and then press ENTER.
- Press ENTER with “Update” selected to start update.
- Press.
Does Onkyo TX-NR656 support Dolby Vision?
Onkyo TX-NR656 supports HDR10, Dolby Vision and Onkyo TX-NR646 supports HDR10.
Does Onkyo TX-NR656 support HDR?

The TX-NR656 enables transmission of High Dynamic Range (HDR) formats, with BT. 2020 support, and provides enhanced picture quality by simultaneously enabling greater detail for both the dark and bright parts of an image. The TX-NR656 also effortlessly upscales 1080p video to stunning 4k UltraHD.
How do I reset my Onkyo TX nr646?
Press and hold 2Q for 3 or more seconds until the 3 remote indicator stays lit. Within 30 seconds, press 1RECEIVER again.
Can you upscale to Dolby Atmos?
A Yes, your receiver should be able to upscale 5.1-channel soundtracks for 7.1 output in your system. A key feature of the Pioneer SC-LX901 and other Atmos-capable AV receivers is the Dolby Surround Upmixer (DSU). 2 or greater systems, but will also work with regular 7.1 speaker layouts.