Denon AVRX4400H vs Pioneer VSX-LX504 – that is a question.
AV receivers under review have the same number of channels. In terms of power, there are differences, the AVRX4400H has such a ratio W/Ohm - 125/8, 165/6, while the VSX-LX504 has a power of 120/8, 230/6. The value of total harmonic distortion is also different, and for the AVRX4400H it is 0.05%, but for the VSX-LX504 it is 0.08%.
The manufacturer installed different DACs, the AVRX4400H received the model 192 KHz/24-bit, but the VSX-LX504 is equipped with AK4458 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Denon AVRX4400H and Pioneer VSX-LX504 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. 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 Pioneer VSX-LX504 works with Deezer, TIDAL, Pandora. 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 VSX-LX504. 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 varies depending on the receiver, the AVRX4400H has 8/3, and the VSX-LX504 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVRX4400H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVRX4400H and VSX-LX504 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. For voice control in the AVRX4400H is used Amazon Alexa, Google Assistant, Siri, Josh.AI, but in the VSX-LX504 is used Amazon Alexa. There is an ECO mode in AVRX4400H. The Denon AVRX4400H and the Pioneer VSX-LX504 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.