Sony STR-DH790 vs Yamaha RX-V677 review

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Sony STR-DH790 vs Yamaha RX-V677 – that is a question.

Amplifier

AV receivers under review have the same number of channels. In terms of power, there are differences, the STR-DH790 has such a ratio W/Ohm - 90/6, while the RX-V677 has a power of 90/8, 150/4. A common feature for devices is the same total harmonic distortion - 0.09%.

Audio features

The manufacturer installed different DACs, the STR-DH790 received the model 192 KHz/24-bit, but the RX-V677 is equipped with Burr-Brown 192 KHz/24-bit. Each of the compared opponents supports Bi-amping. Both Sony STR-DH790 and Yamaha RX-V677 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.

Connectivity

Wireless Internet connection via WIFI is only possible with RX-V677. Each of the receivers has a Bluetooth connector. The RX-V677 has access to the Spotify service. 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 STR-DH790 and the RX-V677. Video scaling is only possible with the RX-V677. Operation with the Dolby Vision is only possible with the STR-DH790.

Extensive connections

The number of HDMI inputs/outputs varies depending on the receiver, the STR-DH790 has 4/1, and the RX-V677 has 6/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the STR-DH790. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. STR-DH790 and RX-V677 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 RX-V677. The Sony STR-DH790 and the Yamaha RX-V677 can be properly configured using the setup assistant.

Multichannel surround

A Dolby Atmos multichannel audio format is available only in the STR-DH790. Only in the STR-DH790 realized a DTS:X surround technology.