Denon AVR-X4100W vs Yamaha RX-V4A comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon AVR-X4100W has 7.2 versus 5.2 for Yamaha RX-V4A. Regarding power, then AVR-X4100W has such a W/Ohm ratio - 125/8, 165/6 when RX-V4A has a power of 80/6. The THD is 0.05% for the AVR-X4100W but 0.06% for the RX-V4A. Both the AVR-X4100W and the RX-V4A 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 Denon AVR-X4100W has support for AirPlay, and its competitor in our comparison - AirPlay, AirPlay 2. Spotify can be used on each receiver. The AVR-X4100W can work with the audio stream from Pandora, SiriusXM, and the RX-V4A can receive a content from Deezer, TIDAL, Pandora, SiriusXM, Qobuz. HDMI signal transmission in standby mode is implemented in each of the devices. Both rivals can scale the resolution of the incoming HDMI signal. The HDR standard - Dolby Vision is supported by these receivers.
The Denon AVR-X4100W has 8/3 HDMI inputs/outputs versus 4/1 HDMI connectors of the Yamaha RX-V4A. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the RX-V4A. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The AVR-X4100W 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. Both AVR-X4100W and RX-V4A can be configured using the Setup assistant.
Only the AVR-X4100W has a Dolby Atmos multichannel audio format support. The receivers do not support the surround sound technology DTS:X.