The Yamaha RX-S602 vs Marantz NR1504 comparison proves that these receivers have many common features.
Considered AV receivers have the same number of channels 5.1. Regarding power, then RX-S602 has such a W/Ohm ratio - 80/8, 125/6 when NR1504 has a power of 50/8, 60/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 384 KHz/32-bit for RX-S602 and 192 KHz/24-bit for the NR1504. Only the RX-S602 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-S602 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The RX-S602 can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, Qobuz, and the NR1504 can receive a content from Pandora, SiriusXM. HDMI signal transmission in standby mode is implemented in each of the devices. Both competitors are not able to scale the HDMI signal. The HDR standard - Dolby Vision is not supported by these receivers.
The Yamaha RX-S602 has 4/1 HDMI inputs/outputs versus 6/1 HDMI connectors of the Marantz NR1504. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The RX-S602 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the NR1504. Receivers do not have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the RX-S602. Both RX-S602 and NR1504 can be configured using the Setup assistant.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.