An affordable AV receiver is always a good option to consider, so Denon AVR-X3700H vs Pioneer VSX-1131 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon AVR-X3700H has 9.2 versus 7.2 for Pioneer VSX-1131. Regarding power, then AVR-X3700H has such a W/Ohm ratio - 105/8, 135/6 when VSX-1131 has a power of 100/8, 170/6. The THD is the same and is 0.08%. Both the AVR-X3700H and the VSX-1131 support Bi-amping. Each of the AV receivers can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
WI-FI modules have the same characteristics: 2.4/5GHz. Rivals from our review have Bluetooth support. The Denon AVR-X3700H has support for AirPlay, AirPlay 2, and its competitor in our comparison - AirPlay. Spotify can be used on each receiver. The AVR-X3700H can work with the audio stream from Deezer, TIDAL, Pandora, SiriusXM, Qobuz, TuneIn Radio, and the VSX-1131 can receive a content from Deezer, TIDAL, Pandora, TuneIn Radio. HDMI signal transmission in standby mode is implemented in each of the devices. Both rivals can scale the resolution of the incoming HDMI signal. The HDR standard - Dolby Vision is supported by these receivers.
The Denon AVR-X3700H has 7/3 HDMI inputs/outputs versus 7/2 HDMI connectors of the Pioneer VSX-1131. The HDMI Audio Return Channel (ARC) feature supports both devices. The HDMI eARC is available only on the AVR-X3700H. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. The AVR-X3700H supports the protection of digital content of the standard HDCP 2.3, versus HDCP 2.2 in the VSX-1131. These compared receivers have a built-in phono stage for connecting a vinyl player.
Each of the AV receivers from our review supports 2 Multi-room zones. An ECO mode is only available for the AVR-X3700H. Both AVR-X3700H and VSX-1131 can be configured using the Setup assistant.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review.