Onkyo TX-NR797 vs Yamaha RX-A1070BL comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Onkyo TX-NR797 has 9.2 versus 7.2 for Yamaha RX-A1070BL. Regarding power, then TX-NR797 has such a W/Ohm ratio - 100/8, 220/6 when RX-A1070BL has a power of 110/8. The THD is 0.08% for the TX-NR797 but 0.06% for the RX-A1070BL.
Characteristics of digital to analog converter (DAC) are different, AK4458 384 KHz/32-bit for TX-NR797 and ESS 192 KHz/24-bit for the RX-A1070BL. Both the TX-NR797 and the RX-A1070BL support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Both models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Onkyo TX-NR797 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The TX-NR797 can work with the audio stream from Deezer, TIDAL, Pandora, TuneIn Radio, and the RX-A1070BL can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. Both rivals can scale the resolution of the incoming HDMI signal. The HDR standard - Dolby Vision is supported by these receivers.
The Onkyo TX-NR797 has 7/2 HDMI inputs/outputs versus 8/2 HDMI connectors of the Yamaha RX-A1070BL. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. These compared receivers have a built-in phono stage for connecting a vinyl player.
The TX-NR797 supports 3 Multi-room zones, versus 2 for the RX-A1070BL. The TX-NR797 supports voice control via Google Assistant, and the RX-A1070BL - Amazon Alexa. An ECO mode is only available for the RX-A1070BL. Both TX-NR797 and RX-A1070BL can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.