It’s strongly recommended to compare different receivers if you want to choose the best one: Marantz NR1509 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 NR1509 has such a ratio W/Ohm - 50/8 20Hz-20KHz, 60/6 1KHz, while the VSX-531 has a power of 80/8 20Hz-20KHz, 140/6 1KHz. A common feature for devices is the same total harmonic distortion - 0.08%.
Competitive models use the same DAC. None of the compared opponents supports Bi-amping. Both Marantz NR1509 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 NR1509 has access to the Spotify service.
Support for the HDR function can only boast of each of the AV receivers. The quality of 4K 60p 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 NR1509 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 NR1509.
The number of HDMI inputs/outputs varies depending on the receiver, the NR1509 has 7/1, and the VSX-531 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the NR1509 and the VSX-531. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. NR1509 and VSX-531 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Marantz NR1509. There is an ECO mode in either AV receiver. The Marantz NR1509 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.
The Marantz NR1509 is better receiver in this comparison. Check Marantz NR1509 price