Having had an opportunity to test Yamaha RX-V671 vs Denon AVR-X2500H, I’d like to share my impression here to facilitate your choice of a new AV receiver.
The number of channels for receivers is different - 7.1 versus 7.2, respectively, for devices. In terms of power, there are differences, the RX-V671 has such a ratio W/Ohm - 90/8, 150/4, while the AVR-X2500H has a power of 95/8, 125/6. The value of total harmonic distortion is also different, and for the RX-V671 it is 0.09%, but for the AVR-X2500H it is 0.08%.
The manufacturer installed different DACs, the RX-V671 received the model Burr-Brown 192 KHz/24-bit, but the AVR-X2500H is equipped with AK4490 384 KHz/32-bit. Each of the compared opponents supports Bi-amping. Both Yamaha RX-V671 and Denon AVR-X2500H can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with AVR-X2500H. Each of the receivers has a Bluetooth connector. The AVR-X2500H has access to the Spotify service. The number of available streaming services varies for receivers, the Yamaha RX-V671 works with Napster, but the Denon AVR-X2500H works with Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud. 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 RX-V671 and the AVR-X2500H. Video scaling is only possible with the RX-V671. Operation with the Dolby Vision is only possible with the AVR-X2500H.
The number of HDMI inputs/outputs varies depending on the receiver, the RX-V671 has 6/1, and the AVR-X2500H has 8/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the RX-V671 and the AVR-X2500H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. RX-V671 and AVR-X2500H support the standard HDCP 2.2. Like most receivers, our models have a built-in phono stage for connecting a vinyl player.
Ability to create 2 Multi zones inherent in both AV receivers. There is an ECO mode in AVR-X2500H. The Denon AVR-X2500H can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the AVR-X2500H. Only in the AVR-X2500H realized a DTS:X surround technology.