The Pioneer VSX-S520 vs Pioneer SC-LX801 comparison proves that these receivers have many common features.
A significant difference between the receivers in the number of channels, Pioneer VSX-S520 has 5.1 versus 9.2 for Pioneer SC-LX801. Regarding power, then VSX-S520 has such a W/Ohm ratio - 50/4 1KHz when SC-LX801 has a power of 140/8 20Hz-20KHz, 200/6 1KHz, 255/4 1KHz. The THD is 0.09% for the VSX-S520 but 0.08% for the SC-LX801.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for VSX-S520 and ESS SABRE32 Ultra 192 KHz/32-bit for the SC-LX801. Only the SC-LX801 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Apple Music service is implemented on considered devices: AirPlay. Spotify can be used on each receiver. The VSX-S520 can work with the audio stream from Deezer, TIDAL, TuneIn Radio, and the SC-LX801 can receive a content from Deezer, TIDAL, Pandora. Compared AV receivers retain the quality of 4K 60p 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 VSX-S520 has 4/1 HDMI inputs/outputs versus 8/2 HDMI connectors of the Pioneer SC-LX801. 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. A voice control is not available. An ECO mode is not present in each of the AV receivers. Both VSX-S520 and SC-LX801 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.
The Pioneer SC-LX801 is better receiver in this comparison. Check Pioneer SC-LX801 price