It’s strongly recommended to compare different receivers if you want to choose the best one: Denon AVR-S650H vs Yamaha RX-A780.
The number of channels for receivers is different - 5.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the AVR-S650H has such a ratio W/Ohm - 75/8, 100/6, while the RX-A780 has a power of 95/8, 160/4. The value of total harmonic distortion is also different, and for the AVR-S650H it is 0.08%, but for the RX-A780 it is 0.06%.
The manufacturer installed different DACs, the AVR-S650H received the model AKM 192 KHz/32-bit, but the RX-A780 is equipped with Burr-Brown 384 KHz/32-bit. The Bi-amping function is implemented only in the Yamaha RX-A780. Both Denon AVR-S650H and Yamaha RX-A780 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 Yamaha RX-A780 works with Deezer, TIDAL, Pandora, Napster, SiriusXM, Qobuz.
The HDR10 function is present in each of the rivals. 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 RX-A780. Video scaling is only possible with the RX-A780. 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 RX-A780 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the AVR-S650H and the RX-A780. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVR-S650H and RX-A780 support the standard HDCP 2.3. Like most receivers, our models have a built-in phono stage for connecting a vinyl player. For voice control in the AVR-S650H is used Amazon Alexa, Google Assistant, Siri, Josh.AI, but in the RX-A780 is used Amazon Alexa, Google Assistant. There is an ECO mode in either AV receiver. The Denon AVR-S650H and the Yamaha RX-A780 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the RX-A780. Only in the RX-A780 realized a DTS:X surround technology.