The catch
Denon AVR-X3900H
Dirac needs its own license.
Side by side
Denon AVR-X3900H vs Onkyo TX-NR7100: Onkyo comes with Dirac for 5.1.4, Denon keeps an amplified 7.1.4 upgrade open
Quick verdict
A finished 5.1.4 room that wants Dirac included and a handy front HDMI socket points to the NR7100. If you need independent sub control, multichannel pre-outs or a later 7.1.4 layout, the X3900H is the better fit.
Before you buy
Why, and what it costs you
An identical amplifier count conceals a different end point
Either one powers 5.1.4 today, yet only X3900H can step up to 7.1.4 by adding a stereo amplifier.
Where this comes from
Nine amplifiers sit in each. X3900H processes eleven main channels, whereas NR7100 processes nine.
The catch
Onkyo TX-NR7100
Nine-channel processing rules out 7.1.4.
Denon AVR-X3900H
- Why pick it
- You will grow the room from 5.1.4 to 7.1.4
- Each of several subs or external power amps needs its own connection
- The catch
- Dirac needs its own license.
Onkyo TX-NR7100
- Why pick it
- The main-room layout ends at nine speakers
- You want Dirac included and need front HDMI access for temporary devices
- The catch
- Nine-channel processing rules out 7.1.4.
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What this page compares
Denon X3900H vs Onkyo NR7100 for a finished 5.1.4 room or a later 7.1.4 expansion, including Dirac licensing and US pre-outs.
A finished 5.1.4 room that wants Dirac included and a handy front HDMI socket points to the NR7100. If you need independent sub control, multichannel pre-outs or a later 7.1.4 layout, the X3900H is the better fit.
Which one fits
Pick the situations that sound like you
A final 5.1.4 layout that comes with Dirac
The required license comes with NR7100. Denon requires a separate purchase.
- Denon AVR-X3900H
- Depends
- Onkyo TX-NR7100
- Better fit
Expanding to 7.1.4 later
With an external stereo amp, X3900H supports the layout.
- Denon AVR-X3900H
- Better fit
- Onkyo TX-NR7100
- Not suitable
You already own a seven-channel external power amp
The US NR7100 lacks full-range main pre-outs.
- Denon AVR-X3900H
- Better fit
- Onkyo TX-NR7100
- Not suitable
A seventh HDMI source for short-term use
On top of its six rear inputs, NR7100 has a front HDMI input.
- Denon AVR-X3900H
- Caution
- Onkyo TX-NR7100
- Better fit
In practice
Differences you will notice
An identical amplifier count conceals a different end point
Either one powers 5.1.4 today, yet only X3900H can step up to 7.1.4 by adding a stereo amplifier.
How we worked this out
Nine amplifiers sit in each. X3900H processes eleven main channels, whereas NR7100 processes nine.
The seventh input adds convenience and not a seventh fast source
The front HDMI port on NR7100 adds a connection but leaves its six fast inputs unchanged.
How we worked this out
In total NR7100 has seven inputs, and six rear ones are 4K120-capable. X3900H has six total fast inputs.
Two sub jacks do not add up to two calibration paths
With a dual-sub installation, X3900H gives you more individual control.
How we worked this out
Four independent sub outputs are on the Denon. According to the NR7100 manual, its two sub outputs carry the same signal.
Plan your receiver connectionsLay out my system
Check a documented speaker layout against HDMI sources and external-amplifier plans.
Denon AVR-X3900H
Handles your setup
Runs 5.1.2 on its own built-in amplifiers. Takes 3 HDMI devices, 1 of them at 4K/120Hz.
Onkyo TX-NR7100
Handles your setup
Runs 5.1.2 on its own built-in amplifiers. Takes 3 HDMI devices, 1 of them at 4K/120Hz. Input count does not guarantee every chroma, bit-depth or DSC combination. Check the manufacturer's HDMI format table and current firmware.
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.
Option A
Denon, AVR-X3900H
AVR-X3900H
You can run 5.1.4 today on the nine built-in amplifiers and eleven-channel processing, then reach 7.1.4 by adding an external stereo amp. Four independent sub outputs make a more involved bass setup possible.
- Best for
- Growing from 5.1.4 to 7.1.4 in stages
Facts we checked
- 11 main processing channels and 9 built-in amplifier channels
- Of 6 HDMI inputs, 6 support 4K120 video
- The NA manual documents 3 HDMI outputs, of which 2 are main-room outputs
- Room setup by Audyssey MultEQ XT32
- Subwoofer outputs aside, 11 full-range main-channel pre-outs
- Before ventilation space, the chassis is 6.6-inch high with antennas horizontal
- 4 subwoofer outputs, each independent
Option B
Onkyo, TX-NR7100
TX-NR7100
Full-bandwidth Dirac Live Room Correction is included, and the nine amplifiers can power 5.1.4 or 7.1.2. A seventh HDMI input on the front is handy for temporary devices.
- Best for
- 5.1.4 where Dirac comes included
Facts we checked
- 9 main processing channels and 9 built-in amplifier channels
- Of 7 HDMI inputs, 6 support 4K120 video
- 2 HDMI outputs
- Room setup by Dirac Live Full Bandwidth
- Subwoofer outputs aside, 0 full-range main-channel pre-outs
- Before ventilation space, the chassis is 6.8125-inch high with antennas horizontal
Spec by spec
Where they really differ
| Spec | Denon AVR-X3900H | Onkyo TX-NR7100 | In practice |
|---|---|---|---|
| Main processing channels | 11 | 9 | X3900H alone can process the eleven main channels of 7.1.4. |
| Full-range main-channel pre-outs | 11 | 0 on the US model | A multichannel external amp can be fed from X3900H. |
| Included correction | Audyssey MultEQ XT32, Dirac optional | Dirac Live Full Bandwidth included | Budgeting with Dirac first means starting from different included software. |
| HDMI inputs | 6 rear | 6 rear plus 1 front | NR7100 offers a handy seventh input for a source you connect only briefly. |
| Subwoofer outputs | 4 independent | 2 carrying the same signal | Sub outputs can be adjusted separately on X3900H. |
| HDMI outputs | 3 | 2 | A third output for Zone 2 comes with the Denon, within its routing limits. |
Trade-offs
What each pick costs you
With Denon AVR-X3900H
- A temporary seventh device has no front HDMI socket to use.
With Onkyo TX-NR7100
- There are no US main-channel pre-outs and no independent sub-output adjustment.
Change of plan
When the answer changes
You will grow the room from 5.1.4 to 7.1.4
Go with Denon AVR-X3900H. Eleven-channel processing on this model supports 7.1.4, provided an external stereo amp and the prescribed assignment are added.
The main-room layout ends at nine speakers
Go with Onkyo TX-NR7100. Nine amplifiers drive 5.1.4 or 7.1.2, and full-bandwidth Dirac is included.
7.1.4 has to work with no external amplifier
Neither model fits. Neither the documented processing layouts nor the internal-amplifier ones cover this requirement. Pick a receiver that has the physical configuration you need.
Decision guide
How to decide
For a finished 5.1.4 room, go with the NR7100 if you value included Dirac and a useful front HDMI socket. Go with X3900H when independent sub control, multichannel pre-outs or a later 7.1.4 layout matter.
Decide if nine speakers is the final count
On either receiver, a 5.1.4 installation uses up all nine built-in amplifiers. When that is the finished room, the NR7100 matches its processing capacity to the layout. Should surround-back speakers be added to the back wall later, X3900H can process the resulting 7.1.4 layout and drive the documented pair of channels from an external stereo amp.
Compare what Dirac really includes
Full-bandwidth Dirac Live Room Correction is included with the NR7100. The X3900H comes with Audyssey MultEQ XT32, and Dirac capabilities are sold separately. For a buyer set on Dirac, that makes the NR7100 attractive, yet it does not show that one software system beats another without measurements. Put license scope and measurement equipment into the budget for the whole system.
Look at the back panel as well as the speaker count
Eleven full-range main-channel pre-outs and four independent sub outputs are exposed on the Denon. The US NR7100 has no main-channel pre-outs, though some regional documentation describes front pre-outs on other versions. A visiting console or camera is a good use of its front HDMI socket. Regional connection details and the way you use temporary sources can decide this pair without any guess about sound quality.
What this page can’t tell you
- A software brand name does not support any ranking of calibration performance.
By the numbers
What the data shows
What we found across the AV receivers we compare, plus the checked facts behind each finding.
How many fit
Only 3 of the 34 models checked meet every need here: “Use four height speakers”, “Begin with Dirac room correction already included”, and “Set up a 7.1.4 room”.
3 models fit, out of 34 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Use four height speakers”, “Begin with Dirac room correction already included”, and “Set up a 7.1.4 room”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Denon AVR-X3900H |
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| Onkyo TX-NR7100 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Denon AVR-X3900H
You will grow the room from 5.1.4 to 7.1.4
See price & reviews on AmazonOnkyo TX-NR7100
The main-room layout ends at nine speakers
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