Pioneer Elite SC-LX904 vs Denon AVRX6300H comparison definitely makes sense.
Considered AV receivers have the same number of channels 11.2. Regarding power, then Elite SC-LX904 has such a W/Ohm ratio - 140/8 when AVRX6300H has a power of 140/8, 175/6. The THD is 0.08% for the Elite SC-LX904 but 0.05% for the AVRX6300H.
Characteristics of digital to analog converter (DAC) are different, ES9026PRO 384 KHz/32-bit for Elite SC-LX904 and 192 KHz/32-bit for the AVRX6300H. Both the Elite SC-LX904 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. 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 Elite SC-LX904 can work with the audio stream from Deezer, TIDAL, Pandora, and the AVRX6300H can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud. 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.
The Pioneer Elite SC-LX904 has 7/3 HDMI inputs/outputs versus 8/3 HDMI connectors of the Denon AVRX6300H. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the Elite SC-LX904. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The Elite SC-LX904 supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the AVRX6300H. 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. The Elite SC-LX904 supports voice control via Amazon Alexa, and the AVRX6300H - Amazon Alexa, Google Assistant, Siri, Josh.AI. An ECO mode is only available for the AVRX6300H. Both Elite SC-LX904 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.