Onkyo TX-RZ920 vs Yamaha R-N803BL comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Onkyo TX-RZ920 has 9.2 versus 2.0 for Yamaha R-N803BL. Regarding power, then TX-RZ920 has such a W/Ohm ratio - 135/8, 175/6 when R-N803BL has a power of 100/8, 160/4. The THD is 0.04% for the TX-RZ920 but 0.01% for the R-N803BL.
Characteristics of digital to analog converter (DAC) are different, AK4490 384 KHz/32-bit for TX-RZ920 and ESS SABRE (9006AS) 192 KHz/24-bit for the R-N803BL. Only the TX-RZ920 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. The Onkyo TX-RZ920 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The TX-RZ920 can work with the audio stream from Deezer, TIDAL, Pandora, TuneIn Radio, and the R-N803BL can receive a content from Deezer, TIDAL, Pandora, Sirius XM. Only the TX-RZ920 provides HDMI signal transmission in standby mode. The TX-RZ920 can scale the input HDMI signal, unlike the R-N803BL. Dolby Vision technology found support only on the TX-RZ920. Only the TX-RZ920 supports HDMI Audio Return Channel (ARC). The HDMI eARC is available only on the TX-RZ920. Of the two receivers in our comparison, HDMI CEC is present in only the TX-RZ920. These compared receivers have a built-in phono stage for connecting a vinyl player. The TX-RZ920 supports voice control via Google Assistant, and the R-N803BL - Amazon Alexa, Google Assistant. An ECO mode is only available for the R-N803BL. The setup assistant will help you configure Onkyo TX-RZ920.
Only the TX-RZ920 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the TX-RZ920.