Marantz SR6015 vs Denon AVR-X3700H


A home theater receiver lets you control all your speakers, content sources, and displays through one place. They’re not just for convenience, either. A high-quality receiver ensures the sound and video signals are synced and accurate, improving your overall entertainment experience.

For many home theater spaces, a 9.2-channel receiver is ideal, supporting the full system you need for the space without making you pay for channels and features you won’t use. Both the receivers below have this capability and can make an excellent addition to a home theater. Comparing the Marantz SR6015 vs Denon AVR-X3700H, neither one comes out as the clear winner. Let’s take a quick look at where each excels before getting into the full reviews (>>> Find on Amazon).

Marantz SR6015 vs Denon AVR-X3700H Side by Side

Marantz SR6015Denon AVR-X3700H
Video8K/60Hz, 4K/120Hz8K/60Hz & 4K/120Hz
Amplifier9.2 Channel (110W per channel)9.2 Channel (105 Watt X 9)
SoundDolby Atmos, Dolby Atmos Height Virtualization Technology, DTS:X, DTS Virtual:X7.1.2, 5.1.4 or 2.1 Dolby Atmos
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Sound Quality

The Denon AVR-X3700H uses separate discrete amplifiers on each of its 9.2 channels, which can be configured for multiple 3D sound formats for realistic, immersive sound. While the sound from the Denon is strong, the Marantz SR6015 takes it to the next level. This starts with the advanced factory tuning all Marantz receivers get. Along with this, it supports the latest object-based audio formats and enhanced Audio Return Channels (eARC) on every HDMI input, letting you enjoy uncompressed audio signals for all your content.

Better sound quality: Marantz SR6015

Video Quality

Both of these receivers support content up to 8K resolutions. The biggest difference here is that the Marantz SR6015 also has the capability to upscale 4K and lower content to a near-8K level of detail. While the Denon AVR-X3700H supports dynamic HDR and other technology to maintain the color and contrast of images, content will look better played through the SR6015.

Higher video quality: Marantz SR6015

Smart Home Integration

The Marantz SR6015 has wireless connectivity and built-in support for some hands-free control through services like Hey Google and Amazon Alexa. It also supports HEOS multi-room music, letting you easily set up whole home entertainment.

While the SR6015 performs well in this regard, here it’s the Denon AVR-X3700H that takes the slight edge. Along with support for the 3 major voice control platforms, it integrates easily with other smart home automation systems, giving users more options for hands-free control.

Easier smart home integration: Denon AVR-X3700H

Marantz SR6015

Marantz SR6015

The SR6015 is the mid-range entry of the Marantz SR line of home theater receivers, and this makes it the ideal choice for audiophiles, movie buffs, and other enthusiasts. Its 9.2 channels are each driven by a discrete high-current amplifier with 110 watts of power per channel, for a stable and balanced sound throughout your listening space. It also benefits from Marantz’s advanced tuning, with support for audio formats like DTS:X, IMAX, and Dolby Atmos Height Virtualization that ensure you’ll get a realistic, full soundscape for all your content.

You’ll get the same high quality from video signals sent through this receiver. All 7 HDMI inputs on the SR6015 have a 4K/120Hz pass-through, with 8K support and upscaling for lower resolution content. It also supports Dynamic HDR, HDR10+, Dolby Vision, and other advanced visual technology, providing an accurate and high-quality picture for all styles of content. Gamers, meanwhile, will appreciate features like Auto Low Latency Mode (ALLM) and a Variable Refresh Rate (VRR) that limit lag, blur, and other image issues that can affect your play.

Along with an extensive array of rear panel inputs, the Marantz SR6015 has convenient headphone and USB inputs on the front panel. It also has Wi-Fi and Bluetooth connectivity, and can be used with Alexa or Hey Google voice control right out of the box, along with multi-room music through HEOS. This makes it easy to integrate into smart home entertainment systems. The only downside of these extensive options is that its operation is more complex than other receivers, and there may be a bit of a learning curve for A/V novices as they figure out everything the impressive SR6015 can do. For our more in-depth review of this AV receiver, click here.


  • Multiple 3D sound format support
  • Powerful high-quality sound
  • 8K support and upscaling on all HDMI ports
  • Built-in voice control and HEOS multi-room music
  • No added lag for gamers
  • Low power use in Auto Eco Mode


  • Not as beginner-friendly
  • Higher cost

Denon AVR-X3700H

Denon AVR-X3700H

Like the Marantz above, the Denon AVR-X3700H supports a variety of 3D sound formats, including DTS Virtual:X and Dolby Atmos Height Virtualization. While it’s a 9.2-channel receiver, it can process signals up to 11.2 channels in a variety of surround sound configurations, giving it more flexibility for a variety of spaces and setups.

The Denon AVR-X3700H brings the same accuracy and quality to video signals and games. This starts with the 4K/120Hz pass-through, with Quick Frame Transport and Quick Media Switching along with VRR and ALLM. That means no worrying about lag or delays. Additionally, it has an 8K/60Hz pass-through to support 8K content, though it lacks the upscaling of the SR6015.

The wireless and hands-free capability of the Denon AVR-X3700H makes it especially appealing for smart home entertainment setups. It can be controlled through Alexa, Google Assistant, or Apple Siri voice control, and also integrates easily with, Control4 SDPP, and other home automation systems.


  • Immersive 3D sound in multiple surround sound configurations
  • Channel processing up to 11.2
  • Supports video signals up to 8K resolutions
  • Works with multiple voice control and automation systems
  • Fast and easy guided setup
  • No added lag


  • No 8K upscaling

The Bottom Line: Marantz SR6015 vs Denon AVR-X3700H

Choosing between the Marantz SR6015 and Denon AVR-X3700H ultimately comes down to what you need from your receiver. If you want the maximum in video and audio quality, the Marantz is the best choice (>>> Check on Bhphotovideo). On the other hand, the Denon is easier to both set up and integrate into home automation systems. It’s also the better value, providing similar performance to the Marantz at a lower price. We hope this comparison has helped you decide which one is the right fit for your home!