The Yamaha RX-V377 vs Yamaha RX-V675 comparison will be extremely helpful for people who want to get a great, powerful receiver with many functions.
The number of channels for receivers is different - 5.1 versus 7.2, respectively, for devices. In terms of power, there are differences, the RX-V377 has such a ratio W/Ohm - 100/8, 135/6, while the RX-V675 has a power of 90/8, 150/4. A common feature for devices is the same total harmonic distortion - 0.09%.
Competitive models use the same DAC. The Bi-amping function is implemented only in the Yamaha RX-V675. Both Yamaha RX-V377 and Yamaha RX-V675 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless connection to the Internet via WIFI can not be performed on these receivers. There is a Bluetooth protocol at the RX-V675. The RX-V675 has access to the Spotify service.
Oddly enough, the support for the HDR function is not implemented in these units. 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-V377 and the RX-V675. Video scaling is only possible with the RX-V675. Operation with the Dolby Vision is only possible with the RX-V675.
The number of HDMI inputs/outputs varies depending on the receiver, the RX-V377 has 4/1, and the RX-V675 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the RX-V377 and the RX-V675. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. RX-V377 and RX-V675 support the standard HDCP 2.2. Unlike most receivers, our models do not have a built-in phono stage for connecting a vinyl player. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in either AV receiver. The Yamaha RX-V377 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.