Denon AVR-X3800H review
Nine amplified channels, thirteen channels of processing, and the upgrade Denon charges extra for.
Quick answer
The Denon AVR-X3800H is a nine-channel AV receiver rated 105 watts per channel, with thirteen channels of processing and four independent subwoofer outputs. Nine amplified channels is the defining number: it covers a 5.2.4 or 7.2.2 Atmos layout without an external power amplifier, and a full 7.2.4 still needs one.
A nine-channel receiver rated 105 watts per channel, with 8K and 4K120 support, Dolby Atmos, DTS:X Pro, IMAX Enhanced and Auro 3D.
Replaced by the X3900H: new X3800H stock is no longer available on Amazon. Denon has replaced it with the AVR-X3900H, which keeps nine amplified channels at 105 W, four subwoofer outputs, Audyssey MultEQ XT32 with an optional Dirac Live upgrade, and six HDMI 2.1 inputs. The advice in this review carries over; the button below goes to the X3900H.
Now sold as the X3900H: Check PriceSpecifications
| Spec | Detail |
|---|---|
| Amplified channels | 9, rated 105 watts per channel |
| Subwoofer outputs | 4 independent |
| Video | 8K/60Hz pass-through, 4K/120 support |
| HDMI | 9 ports, 6 in and 3 out |
| HDCP and eARC | HDCP 2.3, eARC supported |
| Immersive formats | Dolby Atmos, DTS:X Pro, IMAX Enhanced, Auro 3D |
| Multiroom | HEOS built in |
The table above lists the X3800H's core specifications, and the defining one is nine amplified channels at 105 watts each alongside four independent subwoofer outputs.
Specifications above come from Denon's published specifications. Treat pricing as approximate, since Amazon pricing moves.
What it does well
- Nine amplified channels, which covers 5.2.4 or 7.2.2 with no external power amplifier. This is the single reason to choose it over the cheaper models.
- Four independent subwoofer outputs, which is unusual at this price and genuinely useful, because multiple subwoofers smooth bass across seats far more effectively than one bigger one.
- Every immersive format worth having, including Auro 3D and DTS:X Pro rather than just Atmos.
- Full 8K and 4K120 video support, so it is not the component that dates your system.
Where it falls short
- Dirac Live is a paid upgrade on top of the purchase price. The included Audyssey MultEQ XT32 is good, but if you buy this receiver intending to run Dirac, budget for the licence.
- It processes more channels than it amplifies, so a full 7.2.4 layout still needs an external two-channel amplifier. It is easy to buy this expecting otherwise.
- It runs hot. It needs real ventilation above it, and a closed cabinet without airflow is a genuine problem rather than a caution.
- The 105 watt rating is measured with two channels driven, as is normal across the industry. Do not expect that figure with all nine channels working.
What owners report
Owners consistently describe this as the model where the Denon range stops feeling like a compromise, and the reason given is almost always the channel count rather than sound quality. People upgrading from a seven-channel receiver to add ceiling speakers report that the jump was the point of the purchase. eARC, or enhanced audio return channel, is the HDMI feature that lets a television send full bandwidth Dolby Atmos back down the same cable the picture arrived on, so one lead carries video out and sound in.
The recurring complaints are heat and setup complexity. Reports of shutdowns in enclosed cabinets are common enough that ventilation should be part of your plan, not an afterthought. Audyssey calibration also draws mixed reactions: many owners run it and then manually adjust the result, particularly the subwoofer level and the distance settings. The X3800H is one of the picks in our best home theater receivers guide, and if ceiling speakers are the reason you are buying nine channels, the speaker wire length calculator will size the runs before you open a ceiling.
Who it suits
- Anyone running height or ceiling speakers for Atmos, which is what the extra channels buy.
- People who want two or four subwoofers, because seat-to-seat bass consistency improves more than almost any other upgrade.
- Buyers who want the receiver to outlast two television purchases.
Who should skip it
- Anyone building 5.1 or 7.1 with no height channels, who should buy the X1800H and put the difference into speakers.
- People who must install in a sealed cabinet with no airflow.
- Buyers planning a full 7.2.4 layout on day one without an external amplifier, since this cannot power that alone.
Alternatives worth considering
Less money and a well-built receiver, but seven amplified channels rather than nine, so a 5.1.4 layout is off the table without adding an amplifier. Yamaha's room correction and sound signature differ from Denon's, and the choice between them is genuinely a matter of preference.
Check price on AmazonA completely different answer for a room where running speaker cable to four ceiling positions is not possible. It will not match a discrete speaker system driven by this receiver, and it is not close, but a soundbar you can actually install beats a receiver you cannot.
Check price on AmazonCommon questions
How many speakers can the Denon X3800H actually power?
Nine, at 105 watts each by Denon's rating. It processes up to thirteen channels, so layouts beyond nine speakers, such as a full 7.2.4, need an external power amplifier for the extra channels. This distinction between processed and amplified channels catches a lot of buyers out.
Is Dirac Live included with the X3800H?
No. The receiver ships with Audyssey MultEQ XT32 and is Dirac Live ready, meaning you buy the Dirac licence separately. Audyssey XT32 is a capable system in its own right, so treat Dirac as an optional upgrade rather than something missing.
Denon X3800H or X1800H: which should I buy?
If you are running ceiling or height speakers, the X3800H, because the additional amplified channels are the entire point. If you are building a 5.1 or 7.1 system with no height channels, the X1800H does the same job for less. Our X1800H vs X3800H comparison covers the differences in detail.
Does the X3800H support 4K120 for gaming?
Yes. It supports 8K/60Hz pass-through and 4K/120, with HDCP 2.3 and eARC, so a PS5 or Xbox Series X can pass through at full rate. This is one of the reasons it is a sensible long-term purchase.
Why does my receiver need four subwoofer outputs?
Because bass behaves badly in rooms. Multiple subwoofers in different positions smooth out the peaks and nulls that make bass strong in one seat and weak in the next. Two subwoofers is a bigger real-world improvement than one subwoofer twice the size.
Keep reading
- Denon X3800H vs Marantz Cinema 50 compared
- Denon X1800H vs X3800H compared
- Atmos speaker angle calculator
- Speaker sizing calculator
- 5.1 vs 7.1 vs Atmos explained
This review draws on published specifications, manufacturer figures and the consensus of verified owner reviews. We have not tested this product ourselves, and we say so rather than implying otherwise. As an Amazon Associate we earn from qualifying purchases.