It’s strongly recommended to compare different receivers if you want to choose the best one: Onkyo TX-SR373 vs Pioneer VSX-531.
AV receivers under review have the same number of channels. In terms of power, there are differences, the TX-SR373 has such a ratio W/Ohm - 135/6, while the VSX-531 has a power of 80/8, 140/6. The value of total harmonic distortion is also different, and for the TX-SR373 it is 0.06%, but for the VSX-531 it is 0.08%.
Competitive models use the same DAC. None of the compared opponents supports Bi-amping. The model VSX-531 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless connection to the Internet via WIFI can not be performed on these receivers. Each of the receivers has a Bluetooth connector. Support for Apple Music Services not implemented. Spotify is not available for these receivers.
Support for the HDR function can only boast of each of the AV receivers. 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 TX-SR373 and the VSX-531. None of the devices can increase the resolution of the incoming video signal. Review participants do not have the Dolby Vision feature.
The number of HDMI inputs/outputs is the same - 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the TX-SR373 and the VSX-531. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-SR373 and VSX-531 support the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in VSX-531. None of these units 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.