An affordable AV receiver is always a good option to consider, so Yamaha RX-V671 vs Denon AVR-X1400H comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Yamaha RX-V671 has 7.1 versus 7.2 for Denon AVR-X1400H. Regarding power, then RX-V671 has such a W/Ohm ratio - 90/8, 150/4 when AVR-X1400H has a power of 80/8, 120/6. The THD is 0.09% for the RX-V671 but 0.08% for the AVR-X1400H.
Characteristics of digital to analog converter (DAC) are different, Burr-Brown 192 KHz/24-bit for RX-V671 and 192 KHz/24-bit for the AVR-X1400H. Both the RX-V671 and the AVR-X1400H support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Only the Denon AVR-X1400H can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Only the AVR-X1400H supports Spotify. The RX-V671 can work with the audio stream from Napster, and the AVR-X1400H can receive a content from Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud.
Only the Denon AVR-X1400H has support for High dynamic range (HDR). Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The RX-V671 can scale the input HDMI signal, unlike the AVR-X1400H. Dolby Vision technology found support only on the AVR-X1400H.
Each receiver has 6/1 HDMI inputs/outputs. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. The RX-V671 has a built-in phono stage for connecting a vinyl player.
The RX-V671 supports 2 Multi-room zones, versus 3 for the AVR-X1400H. An ECO mode is only available for the AVR-X1400H. The setup assistant will help you configure Denon AVR-X1400H.
Only the AVR-X1400H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVR-X1400H.