The Denon AVR-S510BT vs Pioneer SC-LX801 comparison proves that these receivers have many common features.
A significant difference between the receivers in the number of channels, Denon AVR-S510BT has 5.2 versus 9.2 for Pioneer SC-LX801. Regarding power, then AVR-S510BT has such a W/Ohm ratio - 75/8 20Hz-20KHz, 110/6 1KHz when SC-LX801 has a power of 140/8 20Hz-20KHz, 200/6 1KHz, 255/4 1KHz. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/32-bit for AVR-S510BT and ESS SABRE32 Ultra 192 KHz/32-bit for the SC-LX801. Only the SC-LX801 supports Bi-amping feature. The Pioneer SC-LX801 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Only the SC-LX801 supports Spotify. 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. The SC-LX801 can scale the input HDMI signal, unlike the AVR-S510BT. Dolby Vision technology found support only on the SC-LX801.
The Denon AVR-S510BT has 5/1 HDMI inputs/outputs versus 8/2 HDMI connectors of the Pioneer SC-LX801. Only the SC-LX801 supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present only in the SC-LX801. Both models support the standard HDCP 2.2. The SC-LX801 has 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 AVR-S510BT and SC-LX801 can be configured using the Setup assistant.
Only the SC-LX801 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SC-LX801.
The Pioneer SC-LX801 is better receiver in this comparison. Check Pioneer SC-LX801 price