Design

Beginning with design, the Onkyo TX-NR6100 and Denon AVR-X2700H do not deviate too much from the standard AV receiver appearance. Both are black boxes with a front panel that serves more utility than a flimsy design. The Onkyo has a simpler look and fewer buttons. Meanwhile, the Denon allows you a little more front panel control, which some may value if they would rather make changes without always using the remote.

Still, you cannot overlook the scale. These are not portable little gadgets. Both are on the heavier side, hence you will need a good bit of shelf space to house them. Unless you have a designated area in mind for a receiver, I would not advise them for small quarters. Many individuals, including me, often ignore the weight and size aspect until it's necessary to move them around or put them into a limited entertainment configuration.

Positively, the design is not too busy. Though I would say the Denon appears just a little more sophisticated, you get a neat appearance with any model that fits most home décor. Although people who don't give aesthetics much thought may find Onkyo's simple appearance appealing, I like Denon's added class touch.

Connectivity

Though they approach things a bit differently, both receivers are designed for contemporary configurations. Six HDMI inputs and two outputs abound on the Onkyo TX-NR6100. That's great because for most people it will cover all of your devices—from a gaming console to a Blu-ray player to a streaming device. The simplicity of setting the Onkyo to connect to Bluetooth and Wi-Fi appeals to me. Although linking these might seem like a headache, I have used receivers where the Onkyo made it really smooth. If you are very involved with the Google ecosystem, Google Chromecast is another tool you might employ. AirPlay is also available if you are more of an Apple user.

On the other side, if you run several devices, the Denon AVR-X2700H has a little advantage as it provides 7 HDMI inputs. The Denon's seamless connecting method for both wired and wireless configurations truly distinguishes it. It seems somewhat more polished than the Onkyo. If you run a soundbar or any device that supports an audio return channel, the Denon also includes the helpful eARC capability for HDMI that simplifies things.

Both versions run 8K footage and are suitable for next-generation consoles such the PS5 and Xbox Series X. If you play games, either receiver will work for you; nevertheless, I found the Onkyo to be somewhat more suited for gaming with better frame rates and generally simpler setup when linking my console. The Denon is not far behind, but for gaming, the Onkyo could just be marginally ahead.

Regarding streaming, both receivers offer built-in compatibility for Spotify, Tidal, Deezer, and more; if you like wireless music, they will cover you. Regarding network stability, I saw no appreciable variations. Both maintained strong relationships when streaming 4K or high-resolution audio.

Performance

Although both receivers are renowned for producing excellent sound, there are some noteworthy variations. More than adequate for a medium-sized to large-sized room, the Denon AVR-X2700H offers 95 watts per channel. I tried it with some music and a couple of movies; the sound is rich and full. The bass has depth, the mids are clear, and the highs are not harsh. Watching an action movie will cause you to feel those explosions in your chest; in slower sequences, language is sharp and distinct. The Denon also handles Dolby Atmos well. You feel as if the sound in a 5.1.2 setup is all around you.

Conversely, the Onkyo TX-NR6100 offers one hundred watts per channel. Though not a big leap from the Denon, it is evident. Particularly in music playing, the Onkyo addresses bass with authority. Using a few rock and jazz records, I tried it, and the low-end had more punch than the Denon. Though still excellent, the mids and highs were less nuanced than the Denon, particularly when playing classical music or more challenging soundtracks. Having DTS operating on the Denon, the Onkyo also provides a powerful surround sound experience, however, Dolby Atmos performs just as successfully here.

The Denon excels somewhat better in its dynamic range. Watching movies, I saw more subdued variations in sound between calm and strong sequences. Although still remarkable, the Onkyo appeared to compress those changes a little more, which might be a benefit for those who prefer not to play around with the volume. The Denon has the advantage, however, if you want clean, dynamic sound.

Where and when to use

In the medium to large areas, both receivers perform well. In a smaller setting, you may not fully value what any of them can do and it might seem excessive. Onkyo and Denon will maximize your specialized home theater arrangement or large living room, however, depending on how you use it.

Especially with Dolby Atmos, the Denon AVR-X2700H is most likely the superior option for movie buffs who want the greatest possible surround sound experience. Conversely, the Onkyo TX-NR6100 is a fantastic all-arounder that handles music well but also delivers good movie performance. The Onkyo is the best choice if you like music more than movies or if you want a receiver that can move between the two fluidly.

Compatible Devices

With most current gadgets, both the Denon and the Onkyo perform well. Everything ran well when I hooked a combination of gear—PS5, Apple TV, an older Blu-ray player, and even a turntable.

The Denon's second HDMI input was one feature I liked; it's great if you, like me, have too many devices. Though it's a little improvement, having that second slot meant I wouldn't have to change cables each time I wanted to utilize another device.

Amazon Alexa and Google Assistant, both help with voice control; yet, in my testing, the Onkyo responded somewhat faster. Though there's not much of a difference, you could like the Onkyo's tiny more responsiveness if you're interested in voice control.

Ease of Use

Although setting up receivers might be challenging, Denon and Onkyo simplify the process rather well. Both have on-screen setup aides that coach you through everything. Based on my experience, the Denon configuration was far more user-friendly, particularly regarding sound calibration for my environment. I especially like Denon's Audyssey technology, which modulates the sound depending on the room arrangement. It affects sound quality, particularly in cases where the acoustics of your space are not quite balanced.

Although Onkyo's AccuEQ technology is great as well, I thought the Denon produced a better-balanced output. Having said that, both systems will provide you with a good setup with little effort if you're not a major audiophile.

Once they are configured, daily usage is easy enough with both receivers. The Denon's remote seems better put out and is somewhat more responsive, I did note. Though useful, the Onkyo's remote seems a little disorganized in relation.

Cost

Usually now priced less than the Denon AVR-X2700H, the Onkyo TX-NR6100 is Should your budget be narrower, the Onkyo may appeal more because of that price difference. With the Onkyo, particularly for general performance and connection, you are still getting a lot of bang for your money.

Particularly in terms of sound quality and simplicity of use, the Denon seems a little more polished even if it is more costly. The Denon is something you should give thought to if you have additional money to invest and you really want the greatest audio experience available. But the Onkyo TX-NR6100 is a great option if you want a strong all-around receiver without going bankrupt.