The catch
Denon AVR-S970H
A stereo power amplifier has no front-channel pre-outs to connect to.
Side by side
A TV and projector that stay connected point to AVR-S970H. MultEQ XT or a separate amplifier driving the front pair points to AVR-X1800H. Neither is a complete upgrade over the other, and the same seven-channel and six-input limits apply to both.
Before you buy
S970H has the second HDMI output but lacks front pre-outs. X1800H has front pre-outs but just one display output. If you need both connections, neither covers the whole room.
Where this comes from
The requirement is 2 HDMI outputs together with 2 front main-channel pre-outs. S970H = 2 outputs and 0 pre-outs. X1800H = 1 output and 2 front pre-outs.
The catch
A stereo power amplifier has no front-channel pre-outs to connect to.
The catch
One HDMI display output is all there is.


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Denon AVR-S970H vs AVR-X1800H for a TV plus projector, a stereo power amp and Audyssey setup, including the trade-off their model numbers hide.
A TV and projector that stay connected point to AVR-S970H. MultEQ XT or a separate amplifier driving the front pair points to AVR-X1800H. Neither is a complete upgrade over the other, and the same seven-channel and six-input limits apply to both.
Which one fits
Both can stay connected directly to S970H. X1800H has one HDMI output.
On the US model, X1800H has front left and right pre-outs.
One of these two required connections is missing on each receiver.
Seven main channels and three 4K120 inputs are covered by each.
In practice
S970H has the second HDMI output but lacks front pre-outs. X1800H has front pre-outs but just one display output. If you need both connections, neither covers the whole room.
The requirement is 2 HDMI outputs together with 2 front main-channel pre-outs. S970H = 2 outputs and 0 pre-outs. X1800H = 1 output and 2 front pre-outs.
Seven main channels are processed and amplified on both receivers. A five-speaker base with two heights fits either one equally well. A four-height plan goes two main channels past what either model offers.
Each provides 7 main channels. A 5.1.2 layout takes 5 + 2 = 7 channels, and a 5.1.4 layout takes 5 + 4 = 9, which is 2 more than either receiver has.
On either model, a gaming PC and two consoles can fill the three 4K120 inputs. Three other HDMI sockets remain for a disc player, streamer or another source. Which model you pick does not alter that source budget.
6 total HDMI inputs - 3 4K120 sources = 3 HDMI inputs left over on each receiver. You still have to consider format compatibility and input settings.
Check a documented speaker layout against HDMI sources and external-amplifier plans.
Handles your setup
Runs 5.1.2 on its own built-in amplifiers. Takes 3 HDMI devices, 1 of them at 4K/120Hz.
Handles your setup
Runs 5.1.2 on its own built-in amplifiers. Takes 3 HDMI devices, 1 of them at 4K/120Hz.
A powered subwoofer does not count toward the speaker channels. This checks one main room. Check Zone 2, bi-amping and unusual speaker assignments yourself. Leave room for ventilation, and confirm HDMI settings, cables and speaker impedance before you install.

Denon, AVR-S970H
Two HDMI monitor outputs sit on this seven-amplifier receiver. It makes the most sense in a 5.1.2 or 7.1 room where a TV and a projector are both in use.

Denon, AVR-X1800H
This seven-channel Denon includes Audyssey MultEQ XT and HEOS, plus three 4K120 inputs. It is a targeted pick for a room with one display and two height speakers.
Spec by spec
| Spec | Denon AVR-S970H | Denon AVR-X1800H | In practice |
|---|---|---|---|
| HDMI display outputs | 2 | 1 | For two connected displays, S970H is the direct match. |
| Main-channel pre-outs | None | Front left and right | A separate front-channel power amplifier can be reused with X1800H. |
| Included calibration | Audyssey MultEQ | Audyssey MultEQ XT | X1800H brings the XT calibration tier. It does not add a second display output. |
| Source inputs | 6 HDMI, including 3 with 4K120 | 6 HDMI, including 3 with 4K120 | The total source count and the high-frame-rate source count are the same on both. |
| Speaker layouts | 5.1, 7.1 or 5.1.2 | 5.1, 7.1 or 5.1.2 | A 5.1.4 system is out of reach for either. |
Trade-offs
Change of plan
Go with Denon AVR-S970H. The second HDMI output comes from S970H.
Go with Denon AVR-X1800H. The stereo amplifier connection comes from X1800H.
Neither model fits. This combination is not offered by either model.
Decision guide
AVR-S970H is for keeping a TV and projector connected. AVR-X1800H is for MultEQ XT or a separate amplifier driving the front pair. Neither is a complete upgrade over the other, because the same seven-channel and six-input limits apply to both.
A connection that S970H has is missing on X1800H, even though the latter belongs to the X series. When a projector is part of your room, losing the second display output can be more inconvenient than any calibration change. Rank the rear-panel requirements above the model hierarchy.
An existing stereo amp can connect straight to the front channels on the X1800H. That is concrete value if you own one or have picked one out. Should every speaker stay on the receiver's internal amps, those sockets may never get used.
Decide which output arrangement works first, then check the exact current Amazon prices. A cheaper receiver turns awkward if it forces a display switch or removes a planned amplifier connection. If you need both features, widen the shortlist instead of settling for the least inconvenient compromise.
By the numbers
What we found across the AV receivers we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Denon AVR-S970H |
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| Denon AVR-X1800H |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

A TV and projector each stay on their own HDMI output
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A stereo amplifier you own can drive the front speakers
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