Denon AVR-X540BT vs Yamaha RX-V4A comparison definitely makes sense.
Considered AV receivers have the same number of channels 5.2. Regarding power, then AVR-X540BT has such a W/Ohm ratio - 70/8, 90/6 when RX-V4A has a power of 80/6. The THD is 0.08% for the AVR-X540BT but 0.06% for the RX-V4A. Only the RX-V4A 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. Spotify can be used on each receiver. The AVR-X540BT can work with the audio stream from TIDAL, Pandora, 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. The RX-V4A can scale the input HDMI signal, unlike the AVR-X540BT. The HDR standard - Dolby Vision is supported by these receivers.
The Denon AVR-X540BT has 5/1 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-X540BT supports the protection of digital content of the standard HDCP 2.2, versus HDCP 2.3 in the RX-V4A. 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. Both AVR-X540BT and RX-V4A 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.