Having had an opportunity to test Marantz NR1710 vs Yamaha RX-S602, I’d like to share my impression here to facilitate your choice of a new AV receiver.
The number of channels for receivers is different - 7.2 versus 5.1, respectively, for devices. In terms of power, there are differences, the NR1710 has such a ratio W/Ohm - 50/8, 70/6, while the RX-S602 has a power of 80/8, 125/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the NR1710 received the model 192 KHz/32-bit, but the RX-S602 is equipped with Burr-Brown 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Marantz NR1710 and Yamaha RX-S602 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
These units have the same Wi-Fi modules. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Marantz NR1710 works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, but the Yamaha RX-S602 works with Deezer, TIDAL, Pandora, Napster, SiriusXM, Qobuz.
The HDR10 function is present in each of the rivals. The quality of 4K/60Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. Signaling over HDMI in standby mode can provide the NR1710 and the RX-S602. Video scaling is only possible with the NR1710. Operation with the Dolby Vision is only possible with the NR1710.
The number of HDMI inputs/outputs varies depending on the receiver, the NR1710 has 8/1, and the RX-S602 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the NR1710. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. NR1710 and RX-S602 support the standard HDCP 2.3. In the presence of a built-in phono stage for connecting a vinyl player only at Marantz NR1710.
Ability to create 2 Multi zones inherent in both AV receivers. For voice control in the NR1710 is used Amazon Alexa, Google Assistant, Siri, Josh.AI, but in the RX-S602 is used Amazon Alexa, Google Assistant. There is an ECO mode in either AV receiver. The Marantz NR1710 and the Yamaha RX-S602 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the NR1710. Only in the NR1710 realized a DTS:X surround technology.