It’s strongly recommended to compare different receivers if you want to choose the best one: Denon AVR-S650H vs Marantz NR1508.
AV receivers under review have the same number of channels. In terms of power, there are differences, the AVR-S650H has such a ratio W/Ohm - 75/8, 100/6, while the NR1508 has a power of 50/8. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the AVR-S650H received the model AKM 192 KHz/32-bit, but the NR1508 is equipped with 192 KHz/24-bit. None of the compared opponents supports Bi-amping. Both Denon AVR-S650H and Marantz NR1508 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. Both devices can work with such Apple Music services: AirPlay, AirPlay 2. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Denon AVR-S650H works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud, Mood Mix, but the Marantz NR1508 works with Deezer, TIDAL, Pandora. 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-S650H and the NR1508. None of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-S650H has 5/1, and the NR1508 has 6/1. HDMI Audio Return Channel is only available on Denon AVR-S650H. HDMI eARC is only supported by the AVR-S650H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The AVR-S650H has support for the standard HDCP 2.3, compared to the NR1508, which supports the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-S650H. Voice control is performed using Amazon Alexa, Google Assistant, Siri, Josh.AI in both models. There is an ECO mode in either AV receiver. The Denon AVR-S650H and the Marantz NR1508 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.