An affordable AV receiver is always a good option to consider, so Pioneer VSX-531 vs Marantz SR5011 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Pioneer VSX-531 has 5.1 versus 7.2 for Marantz SR5011. Regarding power, then VSX-531 has such a W/Ohm ratio - 80/8, 140/6 when SR5011 has a power of 100/8, 140/6. The THD is the same and is 0.08%.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/24-bit. Only the SR5011 supports Bi-amping feature. 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. Only the SR5011 supports Spotify.
These units support HDR technology. 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. The SR5011 can scale the input HDMI signal, unlike the VSX-531. Dolby Vision technology found support only on the SR5011.
The Pioneer VSX-531 has 4/1 HDMI inputs/outputs versus 8/2 HDMI connectors of the Marantz SR5011. 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. Receivers do not have a built-in phono stage for connecting a vinyl player. A voice control is not available. It is also worth noting that the ECO mode is presented in each of the receivers. The setup assistant will help you configure Marantz SR5011.
Only the SR5011 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SR5011.