An affordable AV receiver is always a good option to consider, so Yamaha RX-S602 vs Yamaha RX-V475 comparison definitely makes sense.
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 RX-V475 has a power of 80/6. The THD is 0.08% for the RX-S602 but 0.09% for the RX-V475.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 384 KHz/32-bit for RX-S602 and Burr-Brown 192 KHz/24-bit for the RX-V475. 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. 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. 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 5/1 HDMI connectors of the Yamaha RX-V475. 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 RX-V475. Receivers do not have a built-in phono stage for connecting a vinyl player. 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-S602.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.