It’s strongly recommended to compare different receivers if you want to choose the best one: Denon AVR-X8500HSP vs Marantz NR1506.
The number of channels for receivers is different - 13.2 versus 5.2, respectively, for devices. In terms of power, there are differences, the AVR-X8500HSP has such a ratio W/Ohm - 150/8, 190/6, while the NR1506 has a power of 50/8, 60/6. A common feature for devices is the same total harmonic distortion - 0.05%.
The manufacturer installed different DACs, the AVR-X8500HSP received the model AK4490 384 KHz/32-bit, but the NR1506 is equipped with 192 KHz/24-bit. The Bi-amping function is implemented only in the Denon AVR-X8500HSP. Both Denon AVR-X8500HSP and Marantz NR1506 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The contenders have differences in the supported services from Apple - AirPlay, AirPlay 2 versus AirPlay respectively. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Denon AVR-X8500HSP works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, but the Marantz NR1506 works with Pandora, SiriusXM.
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 AVR-X8500HSP and the NR1506. Video scaling is only possible with the AVR-X8500HSP. Operation with the Dolby Vision is only possible with the AVR-X8500HSP.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-X8500HSP has 8/3, and the NR1506 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-X8500HSP. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVR-X8500HSP and NR1506 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-X8500HSP. There is an ECO mode in either AV receiver. The Denon AVR-X8500HSP and the Marantz NR1506 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the AVR-X8500HSP. Only in the AVR-X8500HSP realized a DTS:X surround technology.