In the realm of home theater receivers, Denon is a name synonymous with quality and innovation. The Denon AVR-S670H and AVR-X1800H stand as two notable options, each designed to cater to distinct home entertainment setups. Both receivers are equipped with features that meet modern audio and video demands, but how do they compare when placed side by side? By examining their specifications, features, and practical applications, we’ll uncover the differences and help you determine which model suits your needs best.
In This Comparison:
Denon AVR-S670H vs. AVR-X1800H: Specifications
| DENON AVR-S670H | DENON AVR-X1800H | |
|---|---|---|
 |  |
|
| Model Year | 2023 | 2023 |
| Number of Channels | 5.2 | 7.2 |
| Stereo RMS Power (watts) | 75W 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) | 80W 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) |
| Hdmi Inputs/Outputs | 6/1 | 6/1 |
| Video Upscaling | To 4K and 8K | To 4K and 8K |
| Weight | 17.2 lbs | 19 lbs |
| Today's Best Price | Find on Amazon ProjectorScreen.com | Find on Amazon ProjectorScreen.com |
To start, it’s worth taking a look at the specifications table provided above, which highlights the core features of each receiver. Key differences include the number of channels—5.2 for the AVR-S670H and 7.2 for the AVR-X1800H—and their respective power outputs, with the X1800H offering slightly more wattage per channel. We’ll dive into how these models perform in real-world tests, exploring their strengths and potential trade-offs.
Design and Build
When it comes to design and build, the Denon AVR-S670H and AVR-X1800H are nearly identical in appearance. Both models feature a sleek, minimalist front panel with a one-line FLD display, large control knobs, and a clean button layout. This uniform aesthetic is characteristic of Denon’s approach to blending functionality with understated elegance.
In terms of physical dimensions, both receivers share the same measurements of 17.1 × 13.3 × 6.0 inches (or 8.5 inches tall with antennas extended vertically). Their weights are also very close, with the AVR-S670H weighing 17.2 lbs and the AVR-X1800H coming in slightly heavier at 19.0 lbs. These similarities make them equally suitable for most home entertainment setups, fitting comfortably in standard A/V racks or cabinets.
While the design is largely indistinguishable, the slight difference in weight hints at the X1800H’s added internal components and slightly higher power output, which we’ll examine further in performance tests.
Winner: a tie
Connectivity and Setup
During our testing, we found that both the AVR-S670H and AVR-X1800H offer versatile connectivity options, making them compatible with a wide range of devices. Each receiver features six HDMI inputs, three of which support 8K/60Hz and 4K/120Hz video signals, ensuring they’re future-proofed for the latest displays and gaming systems. However, the AVR-X1800H edges ahead with one HDMI output, while the S670H does not include an HDMI output for multi-room video.
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Both models support dual subwoofer outputs, a phono input for turntables, and a mix of analog and digital audio inputs. The AVR-X1800H includes a slight advantage with its multi-room audio capabilities, offering analog multi-zone output—a feature missing on the S670H. This makes the X1800H a better fit for those seeking a more flexible, multi-room setup.
Setting up these receivers was a straightforward process, thanks to Denon’s Setup Assistant. The guided on-screen instructions walked us through connecting speakers and devices step by step. We also used the included Audyssey microphone for room calibration, which worked well in both cases. The AVR-X1800H uses the upgraded Audyssey MultEQ XT, offering more precise tuning compared to the standard MultEQ on the S670H.
Winner: Denon AVR-X1800H
Audio Performance
In our hands-on testing, the Denon AVR-X1800H showcased its 7.2-channel amplifier’s capability to deliver a robust and immersive audio experience. Rated at 80 watts per channel at 8 ohms (20 Hz–20 kHz, 0.08% THD), the X1800H provided consistent power that easily handled demanding setups. During our test with a 5.1.2 configuration, it brought Dolby Atmos and DTS:X tracks to life with exceptional clarity and depth. The inclusion of DTS Neural:X and Dolby Surround upmixing further enriched legacy content, creating a three-dimensional sound field that enhanced immersion. Bass response through the dual subwoofer outputs was tight and impactful, filling our test space with a balanced low end.
On the other hand, the AVR-S670H, with its 5.2-channel amplifier rated at 75 watts per channel under the same conditions, proved to be a reliable performer for smaller setups. In our tests with a standard 5.1 configuration, it delivered clear and well-defined audio, particularly with Dolby TrueHD and DTS-HD Master Audio sources. While it lacked the height channels needed for Dolby Atmos or DTS:X, the AVR-S670H made up for it with Dolby Pro Logic II and DTS Neo:6, which effectively upmixed 2-channel content into surround sound. Its performance was consistent across a variety of content, from movies to music, though it was less impactful in larger rooms compared to the X1800H.
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The AVR-X1800H’s slightly higher power output and support for advanced surround formats gave it a noticeable edge in delivering a more dynamic and immersive listening experience, especially in multi-dimensional audio setups. Meanwhile, the AVR-S670H, while more modest in capability, excelled at providing solid surround sound for simpler configurations and smaller spaces. Both receivers handled audio with precision, but the X1800H’s versatility and power made it the stronger performer in our tests.
Winner: Denon AVR-X1800H
Video Performance
During our video performance testing, both the Denon AVR-S670H and AVR-X1800H demonstrated strong capabilities, thanks to their support for advanced HDMI 2.1 specifications. Both models handled 8K/60Hz and 4K/120Hz video pass-through flawlessly, providing crisp, detailed visuals on our test displays. HDR performance was equally impressive, with both receivers supporting HDR10, HDR10+, HLG, Dolby Vision, and Dynamic HDR. These features ensured vibrant colors, sharp contrasts, and an excellent dynamic range, allowing both models to excel in displaying high-definition content.
The AVR-X1800H stood out slightly due to its single HDMI output supporting eARC, enabling enhanced audio return channel functionality for transmitting high-quality audio from a compatible TV. In our tests, this feature proved useful for simplifying setup with soundbars or external amplifiers. The AVR-S670H, while lacking a multi-room HDMI output, still offered excellent performance for single-room setups, with its three 8K HDMI inputs providing flexibility for connecting the latest gaming consoles or streaming devices.
Upscaling performance for both receivers was reliable, with 1080p sources transformed into sharp, near-native 4K visuals on our displays. However, neither model supports analog-to-HDMI conversion, which might limit flexibility for those using older video sources.
In conclusion, both models delivered excellent video performance during our tests, making them well-suited for modern home theaters. While the AVR-X1800H’s added flexibility with eARC and multi-room audio capabilities give it a slight edge, the AVR-S670H remains a capable choice for users focused on single-room setups with high-definition video demands.
Winner: Denon AVR-X1800H
OVERVIEWS:
Denon AVR-S670H
The Denon AVR-S670H is a reliable and accessible 5.2-channel receiver designed for smaller home theater setups. Delivering 75 watts per channel at 8 ohms, it offers solid performance for casual viewers and audiophiles in compact spaces. While it lacks support for Dolby Atmos and DTS:X, it compensates with Dolby Pro Logic II and DTS Neo:6 for an engaging surround experience. Its compatibility with 8K/60Hz and 4K/120Hz pass-through ensures future-proof video performance, complemented by HDR10+, Dolby Vision, and Dynamic HDR support.
Connectivity is streamlined with six HDMI inputs, Bluetooth, Wi-Fi, HEOS Built-in, and voice assistant compatibility, making it a flexible option for music streaming and smart home integration. The inclusion of Audyssey MultEQ room calibration simplifies setup, optimizing sound output for different spaces.
Pros
- Affordable entry-level receiver.
- Supports 8K and HDR video formats.
- Simple setup with Denon Setup Assistant and Audyssey MultEQ.
- HEOS Built-in for multi-room audio streaming.
Cons
- Limited to 5.2 channels; no Dolby Atmos or DTS:X support.
- Lower power output compared to higher-tier models.
- Lacks multi-zone video output.
Denon AVR-X1800H
The Denon AVR-X1800H steps up with 7.2-channel support and 80 watts per channel at 8 ohms, making it a strong contender for more complex home theater configurations. Its compatibility with Dolby Atmos and DTS:X provides immersive 3D sound, while advanced upmixing technologies enhance legacy audio content. The receiver supports 8K/60Hz and 4K/120Hz video pass-through, along with a wide array of HDR formats, ensuring vivid picture quality.
With six HDMI inputs, an HDMI output with eARC, and additional multi-room audio options, the AVR-X1800H is well-suited for users seeking a versatile entertainment hub. Enhanced room calibration through Audyssey MultEQ XT further tailors the sound to your environment, ensuring optimal performance in larger or more acoustically complex spaces.
Pros
- Supports Dolby Atmos and DTS:X for 3D audio.
- Higher power output and 7.2-channel support for versatile setups.
- eARC-enabled HDMI output for high-quality audio return.
- Multi-room audio and analog output for flexible configurations.
Cons
- Slightly higher price point compared to the AVR-S670H.
- Heavier and bulkier, which may require more setup space.
- No analog-to-HDMI conversion.
Denon AVR-S670H vs. AVR-X1800H: the Verdict
After thoroughly testing and comparing the Denon AVR-S670H and AVR-X1800H, it’s clear that the AVR-X1800H emerges as the superior choice. (Get the Best Deal on Amazon Today!) With its 7.2-channel support, higher power output, and immersive Dolby Atmos and DTS:X capabilities, it provides a more robust audio experience. Additionally, its multi-room audio options, eARC-enabled HDMI output, and advanced calibration with Audyssey MultEQ XT offer greater flexibility and adaptability for diverse setups.
While the AVR-S670H is a solid, budget-friendly option for smaller systems and simpler needs, the AVR-X1800H’s enhanced performance and versatility make it the better investment for most home theater enthusiasts. For those seeking a richer, more immersive experience, the AVR-X1800H is the clear winner of this comparison.