Having had an opportunity to test Sony STRZA1100ES vs Pioneer SC-LX501, I’d like to share my impression here to facilitate your choice of a new AV receiver.
AV receivers under review have the same number of channels. In terms of power, there are differences, the STRZA1100ES has such a ratio W/Ohm - 70/8, 90/6, while the SC-LX501 has a power of 120/8, 180/6. The value of total harmonic distortion is also different, and for the STRZA1100ES it is 0.09%, but for the SC-LX501 it is 0.08%. Each of the compared opponents supports Bi-amping. Both Sony STRZA1100ES and Pioneer SC-LX501 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. There is a Bluetooth protocol at the SC-LX501. The SC-LX501 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 STRZA1100ES and the SC-LX501. Each of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the STRZA1100ES has 5/2, and the SC-LX501 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is only supported by the STRZA1100ES. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. STRZA1100ES and SC-LX501 support the standard HDCP 2.2. In the presence of a built-in phono stage for connecting a vinyl player only at Pioneer SC-LX501.
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 Sony STRZA1100ES and the Pioneer SC-LX501 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available both models. A DTS:X surround technology is supported by devices from our comparison.