An affordable AV receiver is always a good option to consider, so Onkyo TX-RZ730 vs Marantz NR1710 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Onkyo TX-RZ730 has 9.2 versus 7.2 for Marantz NR1710. Regarding power, then TX-RZ730 has such a W/Ohm ratio - 175/6 when NR1710 has a power of 50/8, 70/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, AK4458 384 KHz/32-bit for TX-RZ730 and 192 KHz/32-bit for the NR1710. Both the TX-RZ730 and the NR1710 support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Onkyo TX-RZ730 has support for AirPlay, and its competitor in our comparison - AirPlay, AirPlay 2. Spotify can be used on each receiver. The TX-RZ730 can work with the audio stream from Deezer, TIDAL, TuneIn Radio, and the NR1710 can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio.
Both AV receivers support HDR10 technology (High dynamic range). 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. The NR1710 can scale the input HDMI signal, unlike the TX-RZ730. The HDR standard - Dolby Vision is supported by these receivers.
The Onkyo TX-RZ730 has 7/2 HDMI inputs/outputs versus 8/1 HDMI connectors of the Marantz NR1710. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the NR1710. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The TX-RZ730 supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the NR1710. These compared receivers have a built-in phono stage for connecting a vinyl player.
The TX-RZ730 supports 3 Multi-room zones, versus 2 for the NR1710. The TX-RZ730 supports voice control via Google Assistant, and the NR1710 - Amazon Alexa, Google Assistant, Siri, Josh.AI. An ECO mode is only available for the NR1710. Both TX-RZ730 and NR1710 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.