An affordable AV receiver is always a good option to consider, so Cambridge Audio AXR100 vs Onkyo TX-8140 comparison definitely makes sense.
Considered AV receivers have the same number of channels 2.0. Regarding power, then AXR100 has such a W/Ohm ratio - 100/8 when TX-8140 has a power of 80/8, 110/6. The THD is 0.01% for the AXR100 but 0.08% for the TX-8140.
Characteristics of digital to analog converter (DAC) are different, 192 KHz/32-bit for AXR100 and AK4458 384 KHz/32-bit for the TX-8140. None of the models support Bi-amping. The Onkyo TX-8140 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. None of the competitors supports Auto speaker calibration.
Only the Onkyo TX-8140 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Each of these units does not support Apple Music. Only the TX-8140 supports Spotify.
HDR is not available on each model. Compared AV receivers are not able to transmit a 4K signal from the source to the TV or projector. HDMI signal transmission in standby mode is not supported by each device. Both competitors are not able to scale the HDMI signal. The HDR standard - Dolby Vision is not supported by these receivers. The HDMI Audio Return Channel (ARC) does not support any one of these models. Unfortunately, HDMI eARC is not available on monitored devices. The models in our review do not support the HDMI CEC function. 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. The setup assistant will help you configure Onkyo TX-8140.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.