
Denon
AVR-X3900H
AV receiver
From
$1,849

Denon · 2024
An entry-level 7.2-channel Dolby Atmos receiver with three 4K/120 Hz inputs, best suited to small and medium rooms.
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The verdict
Reviewers find it exciting and dynamic for the money, with the HDMI 2.1 inputs and HEOS support as the main attractions. It suits a living room or media room with a TV and a few sources. Buyers who need two HDMI outputs for a projector, or more power for a big room, should look at the step-up models.
The AVR-X1800H is Denon's entry point into its X-Series, with seven amplified channels rated at 80 W each, Dolby Atmos and DTS:X, and six HDMI inputs. Three of the six inputs handle 8K and 4K/120 Hz, and it passes VRR and ALLM for gaming. It uses Audyssey MultEQ XT for room correction and HEOS for multiroom music. The main limits are a single HDMI output and modest power for large rooms.
Strengths
Weak spots
Great for
Skip if
From the manufacturer unless noted. Shown for this model.
Sound
Audio formats
Connections
Wireless
Size & placement
Primary source: denon.com
Summaries in our own words. Follow the link to read each review in full.
Calls it good value, with lively and detailed sound, forward-looking HDMI and HEOS streaming. The drawbacks are that only three HDMI inputs support 4K/120 Hz, there is just one HDMI output, and it fits average or small rooms best.
Read the originalThree of the six. Denon lists three of its HDMI inputs as 8K capable, and Trusted Reviews says those same three are the ones that take 4K/120 Hz, which are HDMI 4, 5 and 6.
Yes. The single HDMI output supports eARC, which lets a TV send Dolby Atmos and other high-bitrate audio back to the receiver over one cable.
Not at the same time. It has one HDMI output, so a second display needs a step-up model with two outputs, such as the X2900H.
Denon rates it at 80 W per channel into 8 ohms with two channels driven. That is enough for small and medium rooms according to reviewers, but it is not aimed at large theaters.
Last reviewed Nov 9, 2026. Spotted an error? Tell us.