Pioneer VSX-LX303 vs Onkyo TX-SR383 – that is a question.
The number of channels for receivers is different - 9.2 versus 7.2, respectively, for devices. In terms of power, there are differences, the VSX-LX303 has such a ratio W/Ohm - 100/8, 200/6, while the TX-SR383 has a power of 100/8, 135/6. The value of total harmonic distortion is also different, and for the VSX-LX303 it is 0.08%, but for the TX-SR383 it is 0.09%.
The manufacturer installed different DACs, the VSX-LX303 received the model AK4458 384 KHz/32-bit, but the TX-SR383 is equipped with 192 KHz/24-bit. The Bi-amping function is implemented only in the Pioneer VSX-LX303. The model VSX-LX303 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Each of the receivers has a Bluetooth connector. The VSX-LX303 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 VSX-LX303 and the TX-SR383. Video scaling is only possible with the VSX-LX303. Operation with the Dolby Vision is only possible with the VSX-LX303.
The number of HDMI inputs/outputs varies depending on the receiver, the VSX-LX303 has 7/2, and the TX-SR383 has 4/1. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the VSX-LX303 and the TX-SR383. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. VSX-LX303 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 Pioneer VSX-LX303.
Unlike the VSX-LX303 where 3 Multi zones is provided, the TX-SR383 works with 2 Multi zones. There is an ECO mode in neither AV receiver. The Pioneer VSX-LX303 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the VSX-LX303. Only in the VSX-LX303 realized a DTS:X surround technology.