Denon AVR-X4100W vs Onkyo TX-NR626 comparison definitely makes sense.
Considered AV receivers have the same number of channels 7.2. Regarding power, then AVR-X4100W has such a W/Ohm ratio - 125/8, 165/6 when TX-NR626 has a power of 160/6. The THD is 0.05% for the AVR-X4100W but 0.08% for the TX-NR626.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for AVR-X4100W and Burr-Brown 192 KHz/24-bit for the TX-NR626. Both the AVR-X4100W and the TX-NR626 support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Both models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay. Spotify can be used on each receiver. The AVR-X4100W can work with the audio stream from Pandora, SiriusXM, and the TX-NR626 can receive a content from TuneIn Radio, Last.fm, AUPEO, Simfy.
HDR is not available on each model. 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 rivals can scale the resolution of the incoming HDMI signal. Dolby Vision technology found support only on the AVR-X4100W.
The Denon AVR-X4100W has 8/3 HDMI inputs/outputs versus 6/2 HDMI connectors of the Onkyo TX-NR626. The HDMI Audio Return Channel (ARC) feature supports both devices. 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. These compared receivers have a built-in phono stage for connecting a vinyl player.
The AVR-X4100W supports 3 Multi-room zones, versus 2 for the TX-NR626. A voice control is not available. An ECO mode is only available for the AVR-X4100W. The setup assistant will help you configure Denon AVR-X4100W.
Only the AVR-X4100W has a Dolby Atmos multichannel audio format support. The receivers do not support the surround sound technology DTS:X.