The Onkyo TX-RZ3100 vs Onkyo TX-SR343 comparison will be extremely helpful for people who want to get a great, powerful receiver with many functions.
The number of channels for receivers is different - 11.2 versus 5.1, respectively, for devices. In terms of power, there are differences, the TX-RZ3100 has such a ratio W/Ohm - 200/6, while the TX-SR343 has a power of 100/6. The value of total harmonic distortion is also different, and for the TX-RZ3100 it is 0.04%, but for the TX-SR343 it is 0.08%.
The manufacturer installed different DACs, the TX-RZ3100 received the model AK4490 384 KHz/32-bit, but the TX-SR343 is equipped with TI Burr-Brown 192 KHz/24-bit. The Bi-amping function is implemented only in the Onkyo TX-RZ3100. The model TX-RZ3100 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
Wireless Internet connection via WIFI is only possible with TX-RZ3100. Each of the receivers has a Bluetooth connector. The TX-RZ3100 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-RZ3100 and the TX-SR343. None of the devices can increase the resolution of the incoming video signal. Operation with the Dolby Vision is only possible with the TX-RZ3100.
The number of HDMI inputs/outputs varies depending on the receiver, the TX-RZ3100 has 8/2, and the TX-SR343 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the TX-RZ3100 and the TX-SR343. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-RZ3100 and TX-SR343 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Onkyo TX-RZ3100. Voice control of the basic functions of the receiver is not realized in both models. There is an ECO mode in neither AV receiver. None of these units can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-RZ3100. Only in the TX-RZ3100 realized a DTS:X surround technology.