An affordable AV receiver is always a good option to consider, so Pioneer SC-LX901 vs Onkyo TX-8140 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Pioneer SC-LX901 has 11.2 versus 2.0 for Onkyo TX-8140. Regarding power, then SC-LX901 has such a W/Ohm ratio - 140/8 20Hz-20KHz, 200/6 1KHz when TX-8140 has a power of 80/8 20Hz-20KHz, 110/6 1KHz. The THD is the same and is 0.08%.
Characteristics of digital to analog converter (DAC) are different, ESS SABRE32 Ultra 192KHz/32-bit for SC-LX901 and AK4458 384 KHz/32-bit for the TX-8140. Only the SC-LX901 supports Bi-amping feature. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Spotify can be used on each receiver. The SC-LX901 can work with the audio stream from Deezer, TIDAL, Pandora, TuneIn Radio, and the TX-8140 can receive a content from SiriusXM.
Only the Pioneer SC-LX901 has support for High dynamic range (HDR). Only the SC-LX901 provides HDMI signal transmission in standby mode. The SC-LX901 can scale the input HDMI signal, unlike the TX-8140. Dolby Vision technology found support only on the SC-LX901. Only the SC-LX901 supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the SC-LX901. These compared receivers have a built-in phono stage for connecting a vinyl player. A voice control is not available. An ECO mode is not present in each of the AV receivers. Both SC-LX901 and TX-8140 can be configured using the Setup assistant.
Only the SC-LX901 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SC-LX901.
The Pioneer SC-LX901 is better receiver in this comparison. Check Pioneer SC-LX901 price