It makes sense comparing Marantz AV8805 vs Onkyo TX-RZ710 because they both are able to give some premium features.
A significant difference between the receivers in the number of channels, Marantz AV8805 has 13.2 versus 7.2 for Onkyo TX-RZ710.
Characteristics of digital to analog converter (DAC) are different, AK4490 384 KHz/32-bit for AV8805 and AK4458 384 KHz/32-bit for the TX-RZ710. Both the AV8805 and the TX-RZ710 support Bi-amping. 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 Marantz AV8805 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AV8805 can work with the audio stream from Deezer, TIDAL, Pandora, SiriusXM, TuneIn Radio, and the TX-RZ710 can receive a content from Deezer, TIDAL, Pandora, Tunein Radio.
These units support HDR technology. Compared AV receivers retain the quality of 4K 60p 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. Dolby Vision technology found support only on the AV8805.
The Marantz AV8805 has 8/3 HDMI inputs/outputs versus 8/2 HDMI connectors of the Onkyo TX-RZ710. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the AV8805. 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 AV8805 supports 3 Multi-room zones, versus 2 for the TX-RZ710. It is also worth noting that the ECO mode is presented in each of the receivers. The setup assistant will help you configure Marantz AV8805.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.
The Marantz AV8805 is better receiver in this comparison. Check Marantz AV8805 price