It’s strongly recommended to compare different receivers if you want to choose the best one: Sony STR-ZA2100ES vs Denon AVR-X6500H.
The number of channels for receivers is different - 7.2 versus 11.2, respectively, for devices. In terms of power, there are differences, the STR-ZA2100ES has such a ratio W/Ohm - 75/8, 95/6, while the AVR-X6500H has a power of 140/8, 175/6. The value of total harmonic distortion is also different, and for the STR-ZA2100ES it is 0.09%, but for the AVR-X6500H it is 0.05%. Each of the compared opponents supports Bi-amping. Both Sony STR-ZA2100ES and Denon 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 HDR10 function is present in each of the rivals. 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-ZA2100ES and the AVR-X6500H. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the STR-ZA2100ES has 6/2, and the AVR-X6500H has 8/3. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is supported by the STR-ZA2100ES and the AVR-X6500H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. STR-ZA2100ES and AVR-X6500H 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 STR-ZA2100ES where 2 Multi zones is provided, the AVR-X6500H works with 3 Multi zones. There is an ECO mode in AVR-X6500H. The Sony STR-ZA2100ES and the Denon AVR-X6500H can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.