Denon AVR-S660H vs Onkyo TX-SR494 review

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Denon AVR-S660H vs Onkyo TX-SR494 – that is a question.

Amplifier

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-S660H has such a ratio W/Ohm - 75/8, 100/6, while the TX-SR494 has a power of 135/6. A common feature for devices is the same total harmonic distortion - 0.08%.

Audio features

The manufacturer installed different DACs, the AVR-S660H received the model 192 KHz/32-bit, but the TX-SR494 is equipped with AKM 384 KHz/32-bit. The Bi-amping function is implemented only in the Onkyo TX-SR494. The model TX-SR494 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The AVR-S660H has access to the Spotify service.

Video features

Signaling over HDMI in standby mode can provide the AVR-S660H and the TX-SR494. Video scaling is only possible with the AVR-S660H. Operation with the Dolby Vision is only possible with the AVR-S660H.

Extensive connections

The number of HDMI inputs/outputs varies depending on the receiver, the AVR-S660H has 6/1, and the TX-SR494 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-S660H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The AVR-S660H has support for the standard HDCP 2.3, compared to the TX-SR494, which supports the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-S660H. There is an ECO mode in AVR-S660H. The Denon AVR-S660H and the Onkyo TX-SR494 can be properly configured using the setup assistant.

Multichannel surround

A Dolby Atmos multichannel audio format is available only in the TX-SR494. Only in the TX-SR494 realized a DTS:X surround technology.