Denon AVRX4400H vs Denon AVRX6300H comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon AVRX4400H has 9.2 versus 11.2 for Denon AVRX6300H. Regarding power, then AVRX4400H has such a W/Ohm ratio - 125/8, 165/6 when AVRX6300H has a power of 140/8, 175/6. The THD is the same and is 0.05%.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for AVRX4400H and 192 KHz/32-bit for the AVRX6300H. Both the AVRX4400H and the AVRX6300H 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, AirPlay 2. Spotify can be used on each receiver. The AVRX4400H can work with the audio stream from Deezer, TIDAL, Pandora,iHeart Radio, Sirius XM, Sound Cloud, Napster, and the AVRX6300H can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud.
These units support HDR technology. 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. 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 AVRX4400H. 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 3 Multi-room zones. Supported voice control technologies are identical - Amazon Alexa, Google Assistant, Siri, Josh.AI. It is also worth noting that the ECO mode is presented in each of the receivers. Both AVRX4400H and AVRX6300H can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.