It’s strongly recommended to compare different receivers if you want to choose the best one: Yamaha RX-V4A 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 RX-V4A has such a ratio W/Ohm - 80/6, while the VSX-531 has a power of 80/8, 140/6. The value of total harmonic distortion is also different, and for the RX-V4A it is 0.06%, but for the VSX-531 it is 0.08%. The Bi-amping function is implemented only in the Yamaha RX-V4A. Both Yamaha RX-V4A and Pioneer VSX-531 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The RX-V4A has access to the Spotify service. Signaling over HDMI in standby mode can provide the RX-V4A and the VSX-531. Video scaling is only possible with the RX-V4A. Operation with the Dolby Vision is only possible with the RX-V4A.
The number of HDMI inputs/outputs is the same - 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the RX-V4A. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The RX-V4A has support for the standard HDCP 2.3, compared to the VSX-531, which supports the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. There is an ECO mode in either AV receiver. The Yamaha RX-V4A 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.