An affordable AV receiver is always a good option to consider, so Marantz NR1508 vs Yamaha RX-V475 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Marantz NR1508 has 5.2 versus 5.1 for Yamaha RX-V475. Regarding power, then NR1508 has such a W/Ohm ratio - 50/8 when RX-V475 has a power of 80/6. The THD is 0.08% for the NR1508 but 0.09% for the RX-V475.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for NR1508 and Burr-Brown 192 KHz/24-bit for the RX-V475. None of the models 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 NR1508 has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver.
Only the Marantz NR1508 has support for High dynamic range (HDR). 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. Dolby Vision technology found support only on the NR1508.
The Marantz NR1508 has 6/1 HDMI inputs/outputs versus 5/1 HDMI connectors of the Yamaha RX-V475. Only the RX-V475 supports HDMI Audio Return Channel (ARC). 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. Both models support the standard HDCP 2.2. 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 Marantz NR1508.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.