Onkyo TX-SR343 vs Onkyo TX-8270 – that is a question.
The number of channels for receivers is different - 5.1 versus 2.0, respectively, for devices. In terms of power, there are differences, the TX-SR343 has such a ratio W/Ohm - 100/6, while the TX-8270 has a power of 160/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the TX-SR343 received the model TI Burr-Brown 192 KHz/24-bit, but the TX-8270 is equipped with AK4438 384 KHz/32-bit. None of the compared opponents supports Bi-amping. The model TX-8270 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. None of the AV receivers have an auto speaker calibration support. Each of the receivers has a Bluetooth connector. The TX-8270 has access to the Spotify service.
Support for the HDR function can only boast of the TX-8270. The quality of 4K/60Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. HDMI signal transmission in standby mode can provide only 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-8270.
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-SR343 and the TX-8270. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. TX-SR343 and TX-8270 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Onkyo TX-8270. 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-8270 can be properly configured using the setup assistant.
Generally no support for a Dolby Atmos multichannel audio format. A DTS:X surround technology is not supported by devices from our comparison.