The Denon AVRX4400H vs Denon AVR-X6400H comparison will be extremely helpful for people who want to get a great, powerful receiver with many functions.
The number of channels for receivers is different - 9.2 versus 11.2, respectively, for devices. In terms of power, there are differences, the AVRX4400H has such a ratio W/Ohm - 125/8, 165/6, while the AVR-X6400H has a power of 140/8, 250/6. A common feature for devices is the same total harmonic distortion - 0.05%.
The manufacturer installed different DACs, the AVRX4400H received the model 192 KHz/24-bit, but the AVR-X6400H is equipped with AK4458 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Denon AVRX4400H and Denon AVR-X6400H can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet access via WIFI is possible on both units. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Denon AVRX4400H works with Deezer, TIDAL, Pandora,iHeart Radio, Sirius XM, Sound Cloud, Napster, but the Denon AVR-X6400H works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud.
Support for the HDR function can only boast of each of the AV receivers. The quality of 4K/60Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. Signaling over HDMI in standby mode can provide the AVRX4400H and the AVR-X6400H. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs is the same - 8/3. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the AVRX4400H and the AVR-X6400H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVRX4400H and AVR-X6400H support the standard HDCP 2.2. Like most receivers, our models have a built-in phono stage for connecting a vinyl player.
Ability to create 3 Multi zones inherent in both AV receivers. Voice control is performed using Amazon Alexa, Google Assistant, Siri, Josh.AI in both models. There is an ECO mode in either AV receiver. The Denon AVRX4400H and the Denon AVR-X6400H can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.