Yamaha RX-V585BL vs Yamaha R-N803BL comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-V585BL has 7.2 versus 2.0 for Yamaha R-N803BL. Regarding power, then RX-V585BL has such a W/Ohm ratio - 80/8, 145/6 when R-N803BL has a power of 100/8, 160/4. The THD is 0.09% for the RX-V585BL but 0.01% for the R-N803BL.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 384 KHz/32-bit for RX-V585BL and ESS SABRE (9006AS) 192 KHz/24-bit for the R-N803BL. Only the RX-V585BL 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 Yamaha RX-V585BL has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The RX-V585BL can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, and the R-N803BL can receive a content from Deezer, TIDAL, Pandora, Sirius XM. Only the RX-V585BL provides HDMI signal transmission in standby mode. The RX-V585BL can scale the input HDMI signal, unlike the R-N803BL. Dolby Vision technology found support only on the RX-V585BL. Only the RX-V585BL supports HDMI Audio Return Channel (ARC). The HDMI eARC is available only on the RX-V585BL. Of the two receivers in our comparison, HDMI CEC is present in only the RX-V585BL. The R-N803BL has a built-in phono stage for connecting a vinyl player. The RX-V585BL supports voice control via Amazon Alexa, Google Assistant, Siri, and the R-N803BL - Amazon Alexa, Google Assistant. It is also worth noting that the ECO mode is presented in each of the receivers. The setup assistant will help you configure Yamaha RX-V585BL.
Only the RX-V585BL has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the RX-V585BL.