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Denon AVR-X3900H
A nine-channel Denon receiver with 11-channel processing, HDMI 2.1 on all six inputs, and IMAX Enhanced and Auro-3D support.
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The verdict
This is the pick for bigger rooms and more ambitious speaker layouts in Denon's range. No independent review of the X3900H itself was found; the review of its predecessor, the AVC-X3800H, was positive about refined sound and future-proof connectivity. Buyers with a simple 5.1.2 system can save money with the X2900H.
The AVR-X3900H is Denon's newer mid-range X-Series receiver, with nine amplified channels at 105 W, processing for 11.4 channels and four independent subwoofer outputs. All six HDMI inputs are listed as 8K, there are three HDMI outputs, and it supports Dolby Atmos, DTS:X, IMAX Enhanced and Auro-3D. Audyssey is built in and Dirac Live is an optional upgrade. It suits larger rooms and 5.4.4 or bigger layouts.
Strengths
- Nine amplified channels and 11.4-channel processing allow layouts up to 5.4.4 without external amplifiers.
- All six HDMI inputs are listed as 8K capable, with three HDMI outputs.
- Supports Dolby Atmos, DTS:X, Auro-3D and IMAX Enhanced.
- Four independent subwoofer outputs.
- Audyssey is built in, with Dirac Live available as an upgrade.
Weak spots
- More expensive than the X2900H, which has seven channels.
- No independent review of this exact model was found, only of its predecessor.
- Dirac Live is an optional paid upgrade.
Great for
- Larger rooms and 5.4.4 or bigger Atmos layouts
- Owners with several 4K/120 Hz sources
- Buyers who want Auro-3D and IMAX Enhanced support
Skip if
- Simple 5.1.2 setups where a cheaper receiver is enough
Full specifications
From the manufacturer unless noted. Shown for this model.
Sound
- Amplified channels
- 9
- Processing channels
- 11
- Power per channelAs stated by the maker, usually at 8 ohms with two channels driven. Real multichannel output is lower.
- 105 W
- Room correction
- Audyssey (built in); optional Dirac Live upgrade
- Pre-outs
- Multichannel pre-out (11.4); zone analog pre-out
- Subwoofer outputs
- 4
Audio formats
- Dolby Atmos
- Yes
- DTS:X
- Yes
- IMAX Enhanced
- Yes
- Auro-3D
- Yes
Connections
- HDMI inputs
- 6
- HDMI inputs with 4K120
- 6source
- HDMI outputs
- 3
- eARC
- Yes
- HDR passthrough
- HDR10, HDR10+, Dolby Vision, HLG
- VRR passthrough
- Yes
- ALLM passthrough
- Yes
Wireless
- Music streaming
- HEOS, Spotify Connect, 360 Reality Audio
Size & placement
- Width
- 434 mm
- Height
- 168 mm
- Depth
- 389 mm
- Weight
- 12.5 kg
Primary source: denon.com
Setup notes
- Power is rated at 105 W per channel into 8 ohms, 20 Hz to 20 kHz, 0.08% distortion, two channels driven; 135 W into 6 ohms at 1 kHz, 0.7%.
- Denon lists the six HDMI inputs as "all 8K". The 4K/120 Hz count of 6 follows from that and from the predecessor's HDMI 2.1 inputs; the maker page does not state it separately.
- Three HDMI outputs, one of them eARC.
- Supports Dolby Vision, HDR10+, HLG and Dynamic HDR pass-through.
What reviewers found
Summaries in our own words. Follow the link to read each review in full.
Review of the predecessor (X3800H), which has the same nine-channel, 105 W layout. Liked the refined, warm sound, choice of room-calibration software and HDMI 2.1 on every input; found it bland to look at and some rivals more driving.
Read the original
Questions
How many HDMI inputs on the AVR-X3900H support 4K at 120 Hz?
Denon lists all six HDMI inputs as 8K capable. Its predecessor, the X3800H, was reported by What Hi-Fi? to have HDMI 2.1 on all six inputs, and the 8K inputs are the ones that carry 4K/120 Hz.
How many speakers can it power?
It has nine amplified channels and processes 11.4 channels, so it can drive up to a 5.4.4 layout on its own and larger systems with an external amplifier.
Does it support Auro-3D and IMAX Enhanced?
Yes. Denon lists Dolby Atmos, DTS:X, Auro-3D, IMAX Enhanced and 360 Reality Audio.
Is it the same as the AVC-X3900H?
The AVC-X3900H is the model name Trusted Reviews gives for the UK and Europe. The AVR-X3900H listed here is the US model.
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Last reviewed Nov 9, 2026. Spotted an error? Tell us.