Denon AVR-X6500H vs Onkyo TX-SR383 – that is a question.
The number of channels for receivers is different - 11.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the AVR-X6500H has such a ratio W/Ohm - 140/8, 175/6, while the TX-SR383 has a power of 100/8, 135/6. The value of total harmonic distortion is also different, and for the AVR-X6500H it is 0.05%, but for the TX-SR383 it is 0.09%.
The manufacturer installed different DACs, the AVR-X6500H received the model 192 KHz/32-bit, but the TX-SR383 is equipped with 192 KHz/24-bit. The Bi-amping function is implemented only in the Denon AVR-X6500H. The model AVR-X6500H can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with AVR-X6500H. Each of the receivers has a Bluetooth connector. The AVR-X6500H 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 AVR-X6500H and the TX-SR383. Video scaling is only possible with the AVR-X6500H. Operation with the Dolby Vision is only possible with the AVR-X6500H.
The number of HDMI inputs/outputs varies depending on the receiver, the AVR-X6500H has 8/3, and the TX-SR383 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-X6500H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. AVR-X6500H and TX-SR383 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-X6500H.
Unlike the AVR-X6500H where 3 Multi zones is provided, the TX-SR383 works with 2 Multi zones. There is an ECO mode in AVR-X6500H. The Denon AVR-X6500H can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the AVR-X6500H. Only in the AVR-X6500H realized a DTS:X surround technology.