Onkyo TX-NR575 vs Onkyo TX-SR383 – that is a question.
AV receivers under review have the same number of channels. In terms of power, there are differences, the TX-NR575 has such a ratio W/Ohm - 135/6, while the TX-SR383 has a power of 100/8, 135/6. The value of total harmonic distortion is also different, and for the TX-NR575 it is 0.08%, but for the TX-SR383 it is 0.09%.
The manufacturer installed different DACs, the TX-NR575 received the model 384 KHz/32-bit, but the TX-SR383 is equipped with 192 KHz/24-bit. The Bi-amping function is implemented only in the Onkyo TX-NR575. The model TX-NR575 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The TX-NR575 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 TX-NR575 and the TX-SR383. None of the devices can increase the resolution of the incoming video signal. Operation with the Dolby Vision is only possible with the TX-NR575.
The number of HDMI inputs/outputs is the same - 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the TX-NR575 and the TX-SR383. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-NR575 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 Onkyo TX-NR575.
Ability to create 2 Multi zones inherent in both AV receivers. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in neither AV receiver. The Onkyo TX-NR575 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-NR575. Only in the TX-NR575 realized a DTS:X surround technology.