It’s strongly recommended to compare different receivers if you want to choose the best one: Denon AVR-S650H vs Pioneer VSX-531.
The number of channels for receivers is different - 5.2 versus 5.1, respectively, for devices. In terms of power, there are differences, the AVR-S650H has such a ratio W/Ohm - 75/8, 100/6, while the VSX-531 has a power of 80/8, 140/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the AVR-S650H received the model AKM 192 KHz/32-bit, but the VSX-531 is equipped with 192 KHz/24-bit. None of the compared opponents supports Bi-amping. Both Denon AVR-S650H and Pioneer VSX-531 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with AVR-S650H. Each of the receivers has a Bluetooth connector. The AVR-S650H has access to the Spotify service. 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 AVR-S650H and the VSX-531. None of the devices can increase the resolution of the incoming video signal. Operation with the Dolby Vision is only possible with the AVR-S650H.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-S650H has 5/1, and the VSX-531 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-S650H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The AVR-S650H has support for the standard HDCP 2.3, compared to the VSX-531, which supports the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-S650H. There is an ECO mode in either AV receiver. The Denon AVR-S650H can be properly configured using the setup assistant.
Generally no support for a Dolby Atmos multichannel audio format. A DTS:X surround technology is not supported by devices from our comparison.