The catch
Marantz CINEMA 70s
Even a slim body needs room for ventilation and rear cables.
Side by side
Marantz CINEMA 70s vs Denon AVR-X1800H: Marantz brings a slim fit and full pre-outs, neither can grow to four heights
Quick verdict
The original CINEMA 70s is the choice for a slim chassis or seven main-channel pre-outs. AVR-X1800H is the choice for MultEQ XT when just the front pair needs an external amp. Each runs 5.1.2 and has one HDMI display output, and neither grows to four height speakers.
Before you buy
Why, and what it costs you
Only one direct connection plan suits a seven-channel power amp
Compared with X1800H, CINEMA 70s has five more full-range pre-outs. That matters when your existing amplifier handles the center and surround channels as well as the front pair. If all you have is a stereo amp, both provide the outputs it needs.
Where this comes from
7 Marantz main-channel pre-outs - 2 Denon front pre-outs = 5 additional outputs. A stereo amp uses 2, while a full seven-channel external amp needs 7.
The catch
Denon AVR-X1800H
Full-range pre-outs exist for the front pair alone.
Marantz CINEMA 70s
- Why pick it
- A low cabinet that still leaves proper ventilation space
- Send all seven main channels out to separate power amplifiers
- The catch
- Even a slim body needs room for ventilation and rear cables.
Denon AVR-X1800H
- Why pick it
- You want Audyssey MultEQ XT as the included setup
- Front-only power-amp support in a conventional receiver is enough
- The catch
- Full-range pre-outs exist for the front pair alone.
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What this page compares
Marantz CINEMA 70s vs Denon AVR-X1800H for a slim cabinet, separate amplifiers and 5.1.2 speakers, weighing full pre-outs against front-only amplifier support.
The original CINEMA 70s is the choice for a slim chassis or seven main-channel pre-outs. AVR-X1800H is the choice for MultEQ XT when just the front pair needs an external amp. Each runs 5.1.2 and has one HDMI display output, and neither grows to four height speakers.
Which one fits
Pick the situations that sound like you
I already have a seven-channel external amplifier
A complete seven-channel pre-out set is on Marantz. Denon offers front left and right alone.
- Marantz CINEMA 70s
- Better fit
- Denon AVR-X1800H
- Not suitable
My only amp is a stereo one for the front speakers
On the reviewed US models, each provides front left and right line-level pre-outs.
- Marantz CINEMA 70s
- Good
- Denon AVR-X1800H
- Good
My cabinet calls for a slim receiver
Marantz lists a 4.3-inch chassis height, so check ventilation, cable depth and the real shelf opening.
- Marantz CINEMA 70s
- Better fit
- Denon AVR-X1800H
- Depends
I want my TV and projector wired in directly
One HDMI display output is all each has.
- Marantz CINEMA 70s
- Not suitable
- Denon AVR-X1800H
- Not suitable
In practice
Differences you will notice
Only one direct connection plan suits a seven-channel power amp
Compared with X1800H, CINEMA 70s has five more full-range pre-outs. That matters when your existing amplifier handles the center and surround channels as well as the front pair. If all you have is a stereo amp, both provide the outputs it needs.
How we worked this out
7 Marantz main-channel pre-outs - 2 Denon front pre-outs = 5 additional outputs. A stereo amp uses 2, while a full seven-channel external amp needs 7.
Seven pre-outs cannot turn into nine channels
Marantz can pass all seven main channels to external amplification, yet its processor still tops out at seven. Nine channels are needed for five ear-level speakers plus four heights, which is beyond both receivers.
How we worked this out
Each of CINEMA 70s and X1800H processes 7 main channels. A 5.1.4 layout needs 5 + 4 = 9. External power amps add no decoding channels.
In this pair, going slim costs you no HDMI inputs
Like X1800H, CINEMA 70s keeps six source inputs, three of them for 4K120. Its space-saving case therefore does not force you to shortlist fewer sources here. On both, display expansion stays limited to one output.
How we worked this out
The US product records for both list 6 HDMI inputs, 3 with 4K120, and 1 HDMI output. With antennas horizontal, the original CINEMA 70s is 4.3 inches high.
Plan your receiver connectionsLay out my system
Check a documented speaker layout against HDMI sources and external-amplifier plans.
Marantz CINEMA 70s
Handles your setup
Runs 5.1.2 on its own built-in amplifiers. Takes 3 HDMI devices, 1 of them at 4K/120Hz.
Denon AVR-X1800H
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.
Option A
Marantz, CINEMA 70s
CINEMA 70s
Seven amplifiers and full 7.2 pre-outs fit into the 4.3-inch-tall chassis of the original slim CINEMA 70s. Use it as the anchor of a low-profile 5.1.2 room, or let it feed a separate power amp.
- Best for
- Low cabinets that also need two height speakers
Facts we checked
- External main-channel outputs: 7 full-range pre-outs
- Built-in / processed channels: 7 / 7
- Included room correction: Audyssey MultEQ
- HDMI connections: 6 inputs, 3 with 4K120, 1 output
Option B
Denon, AVR-X1800H
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.
- Best for
- A single-display 5.1.2 room using Audyssey MultEQ XT
Facts we checked
- External main-channel outputs: 2 front pre-outs
- Built-in / processed channels: 7 / 7
- Included room correction: Audyssey MultEQ XT
- HDMI connections: 6 inputs, 3 with 4K120, 1 output
Spec by spec
Where they really differ
| Spec | Marantz CINEMA 70s | Denon AVR-X1800H | In practice |
|---|---|---|---|
| External main-channel outputs | 7 full-range pre-outs | 2 front pre-outs | A complete seven-channel external amplifier can be fed from Marantz. Denon can feed just the front pair directly. |
| Built-in / processed channels | 7 / 7 | 7 / 7 | More pre-outs on Marantz do not mean more processing channels. |
| Included room correction | Audyssey MultEQ | Audyssey MultEQ XT | The XT tier is on Denon. We claim no measured winner in room correction. |
| HDMI connections | 6 inputs, 3 with 4K120, 1 output | 6 inputs, 3 with 4K120, 1 output | The slim design holds the input count steady, yet neither receiver connects two displays directly. |
| Cabinet design | 4.3-inch chassis with antennas horizontal | Conventional receiver body | Measure the shelf and the clearance you need. The height of the Marantz chassis is not a minimum safe shelf opening. |
Trade-offs
What each pick costs you
With Marantz CINEMA 70s
- The Audyssey tier it includes is MultEQ and not MultEQ XT.
With Denon AVR-X1800H
- With one HDMI output, the plan for direct display connections is limited.
Change of plan
When the answer changes
An external amplifier has to receive all seven main channels
Go with Marantz CINEMA 70s. A complete seven-channel pre-out set comes with CINEMA 70s.
Pre-outs for the front are enough for me, and I want MultEQ XT
Go with Denon AVR-X1800H. Those two requirements come together in the US X1800H.
Next, I am moving to five ear-level speakers and four heights
Neither model fits. Each processes seven main channels, short of the nine that are required.
Decision guide
How to decide
The original CINEMA 70s suits a slim chassis or a need for seven main-channel pre-outs. AVR-X1800H suits MultEQ XT where only the front pair needs an external amp. Both run 5.1.2 with one HDMI display output, and neither reaches four height speakers.
Find the usable cabinet space
A slim Marantz body can still be unsuitable for a close-fitting shelf. Leave the manufacturer's ventilation clearance plus enough space for HDMI and speaker cables. The 4.3-inch height alone is no basis for buying. This comparison is about the original CINEMA 70s and not the Series 2.
Pair the pre-outs with the amplifier you have
If you already own a seven-channel power amp, the Marantz connection set is worth having. An ordinary stereo amp needs only the front pair, and the US X1800H provides that too. Before paying for a full pre-out array, count the external channels you will use.
A slim case is not a larger speaker system
Flexible amplification for seven channels is what the CINEMA 70s offers. It is no eleven-channel processor tucked inside a small case. If the room you are planning includes four heights, move to a model whose documented processing and amplifier arrangement cover that layout.
What this page can’t tell you
- Our checks cover US connections and speaker layouts only, and we have not measured amplifier output, room-correction results or sound quality. HDMI format, firmware and display compatibility still need to be checked.
By the numbers
What the data shows
What we found across the AV receivers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Marantz CINEMA 70s |
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| Denon AVR-X1800H |
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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.
Marantz CINEMA 70s
A low cabinet that still leaves proper ventilation space
See price & reviews on AmazonDenon AVR-X1800H
You want Audyssey MultEQ XT as the included setup
See price & reviews on AmazonEach link opens in a new tab.
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