Onkyo TX-RZ710 vs Harman Kardon HK 3700 review

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Onkyo TX-RZ710 vs Harman Kardon HK 3700 – that is a question.

Amplifier

The number of channels for receivers is different - 7.2 versus 2.0, respectively, for devices. In terms of power, there are differences, the TX-RZ710 has such a ratio W/Ohm - 175/6, while the HK 3700 has a power of 85/8. The value of total harmonic distortion is also different, and for the TX-RZ710 it is 0.08%, but for the HK 3700 it is 0.07%.

Audio features

The manufacturer installed different DACs, the TX-RZ710 received the model AK4458 384 KHz/32-bit, but the HK 3700 is equipped with 192 KHz/24-bit. The Bi-amping function is implemented only in the Onkyo TX-RZ710. The model TX-RZ710 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The TX-RZ710 has access to the Spotify service. The number of available streaming services varies for receivers, the Onkyo TX-RZ710 works with Deezer, TIDAL, Pandora, Tunein Radio, but the Harman Kardon HK 3700 works with vTuner.

Video features

Support for the HDR function can only boast of the TX-RZ710. HDMI signal transmission in standby mode can provide only the TX-RZ710. Video scaling is only possible with the TX-RZ710. Review participants do not have the Dolby Vision feature. HDMI Audio Return Channel is only available on Onkyo TX-RZ710. HDMI eARC is not supported by the TX-RZ710 and the HK 3700. When comparing receivers, it becomes clear that only the Onkyo TX-RZ710 has HDMI CEC. Like most receivers, our models 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 TX-RZ710. None of these units can be properly configured using the setup assistant.

Multichannel surround

A Dolby Atmos multichannel audio format is available only in the TX-RZ710. Only in the TX-RZ710 realized a DTS:X surround technology.