It’s strongly recommended to compare different receivers if you want to choose the best one: Denon AVR-S940H vs Marantz NR1506.
The number of channels for receivers is different - 7.2 versus 5.2, respectively, for devices. In terms of power, there are differences, the AVR-S940H has such a ratio W/Ohm - 90/8, 125/6, while the NR1506 has a power of 50/8, 60/6. The value of total harmonic distortion is also different, and for the AVR-S940H it is 0.08%, but for the NR1506 it is 0.05%.
The manufacturer installed different DACs, the AVR-S940H received the model 192 KHz/32-bit, but the NR1506 is equipped with 192 KHz/24-bit. None of the compared opponents supports Bi-amping. Both Denon AVR-S940H and Marantz NR1506 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet access via WIFI is possible on both units. 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-S940H works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, but the Marantz NR1506 works with Pandora, SiriusXM. 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-S940H and the NR1506. Video scaling is only possible with the AVR-S940H. Operation with the Dolby Vision is only possible with the AVR-S940H.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-S940H has 8/2, and the NR1506 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the AVR-S940H and the NR1506. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVR-S940H 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-S940H. There is an ECO mode in either AV receiver. The Denon AVR-S940H and the Marantz NR1506 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the AVR-S940H. Only in the AVR-S940H realized a DTS:X surround technology.