An affordable AV receiver is always a good option to consider, so Yamaha RX-A780 vs Yamaha RX-V475 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-A780 has 7.2 versus 5.1 for Yamaha RX-V475. Regarding power, then RX-A780 has such a W/Ohm ratio - 95/8, 160/4 when RX-V475 has a power of 80/6. The THD is 0.06% for the RX-A780 but 0.09% for the RX-V475.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 384 KHz/32-bit for RX-A780 and Burr-Brown 192 KHz/24-bit for the RX-V475. Only the RX-A780 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-A780 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. The RX-A780 can scale the input HDMI signal, unlike the RX-V475. Dolby Vision technology found support only on the RX-A780.
The Yamaha RX-A780 has 7/2 HDMI inputs/outputs versus 5/1 HDMI connectors of the Yamaha RX-V475. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the RX-A780. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The RX-A780 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the RX-V475. The RX-A780 has 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-A780.
Only the RX-A780 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the RX-A780.