The Denon AVR-X4100W vs Marantz SR8015 comparison proves that these receivers have many common features.
A significant difference between the receivers in the number of channels, Denon AVR-X4100W has 7.2 versus 11.2 for Marantz SR8015. Regarding power, then AVR-X4100W has such a W/Ohm ratio - 125/8, 165/6 when SR8015 has a power of 140/8, 175/6. The THD is the same and is 0.05%. Both the AVR-X4100W and the SR8015 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 SR8015 can receive a content from Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud. 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.
Each receiver has 8/3 HDMI inputs/outputs. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the SR8015. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 3 Multi-room zones. It is also worth noting that the ECO mode is presented in each of the receivers. Both AVR-X4100W and SR8015 can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. A surround technology DTS:X is supported only by the SR8015.