Denon AVR-X1500H vs Onkyo TX-NR626 comparison definitely makes sense.
Considered AV receivers have the same number of channels 7.2. Regarding power, then AVR-X1500H has such a W/Ohm ratio - 80/8, 120/6 when TX-NR626 has a power of 160/6. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/32-bit for AVR-X1500H and Burr-Brown 192 KHz/24-bit for the TX-NR626. Both the AVR-X1500H 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 Denon AVR-X1500H has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AVR-X1500H can work with the audio stream from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, and the TX-NR626 can receive a content from TuneIn Radio, Last.fm, AUPEO, Simfy. 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 TX-NR626 can scale the input HDMI signal, unlike the AVR-X1500H. Dolby Vision technology found support only on the AVR-X1500H.
The Denon AVR-X1500H has 6/1 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. Both models support the standard HDCP 2.2. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. An ECO mode is only available for the AVR-X1500H. The setup assistant will help you configure Denon AVR-X1500H.
Only the AVR-X1500H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVR-X1500H.