It’s strongly recommended to compare different receivers if you want to choose the best one: Onkyo TX-SR383 vs Denon AVR-X4800H.
The number of channels for receivers is different - 7.2 versus 9.4, respectively, for devices. In terms of power, there are differences, the TX-SR383 has such a ratio W/Ohm - 100/8, 135/6, while the AVR-X4800H has a power of 125/8, 165/6. The value of total harmonic distortion is also different, and for the TX-SR383 it is 0.09%, but for the AVR-X4800H it is 0.08%.
The manufacturer installed different DACs, the TX-SR383 received the model 192 KHz/24-bit, but the AVR-X4800H is equipped with 192 KHz/32-bit. The Bi-amping function is implemented only in the Denon AVR-X4800H. The model AVR-X4800H can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The AVR-X4800H has access to the Spotify service. Signaling over HDMI in standby mode can provide the TX-SR383 and the AVR-X4800H. Video scaling is only possible with the AVR-X4800H. Operation with the Dolby Vision is only possible with the AVR-X4800H.
The number of HDMI inputs/outputs varies depending on the receiver, the TX-SR383 has 4/1, and the AVR-X4800H has 7/3. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the AVR-X4800H. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. The TX-SR383 has support for the standard HDCP 2.2, compared to the AVR-X4800H, which supports the standard HDCP 2.3. In the presence of a built-in phono stage for connecting a vinyl player only at Denon AVR-X4800H.
Unlike the TX-SR383 where 2 Multi zones is provided, the AVR-X4800H works with 3 Multi zones. There is an ECO mode in AVR-X4800H. The Denon AVR-X4800H can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the AVR-X4800H. Only in the AVR-X4800H realized a DTS:X surround technology.