N 5909 Honest Review — Is the Hype Justified?

When I first heard about the Mark Levinson № 5909, I'll admit I was more than a little skeptical. As someone who has spent the better part of a decade cycling through high-end audio gear, from open-back planar magnetics that require a dedicated desktop amp to the most popular consumer noise-canceling flagships, I’ve learned that a high price tag doesn't always equate to a linear increase in performance. However, the buzz surrounding these headphones was different. Audiophiles who usually scoff at anything with a Bluetooth antenna were suddenly claiming that these were the first wireless headphones that could actually satisfy a critical listener. After six months of daily use, taking them on cross-country flights, using them in my home office, and listening to my most familiar reference tracks, I finally feel ready to share my honest experience.

The First Impression: Luxury vs. Utility

I remember the day I unboxed them. Having spent nearly a thousand dollars on a pair of headphones, my expectations for the "unboxing experience" were admittedly high. I've owned the AirPods Max and the Sony WH-1000XM5, and while those feel premium in a consumer electronics sense, the № 5909 feels like a piece of high-end hifi equipment. I noticed the weight immediately. They aren't "heavy" in a way that causes neck strain, but they have a density that speaks to the materials used—aluminum, leather, and high-quality plastics. I was particularly struck by the automotive-grade metallic paint on the earcups. It reminded me of the finish on a high-end sports car, which makes sense given Mark Levinson’s history in luxury automotive audio.

One thing that bothered me initially, however, was the size of the carrying case. It’s substantial. In my experience, if you’re a light traveler who relies on a small backpack, these are going to take up a significant chunk of your "personal item" space. I found that I had to reorganize my usual flight bag just to accommodate them. But as soon as I put them on my head, that slight annoyance faded. The leather on the earpads is incredibly supple. I’ve worn these for four-hour stretches while working on spreadsheets, and I didn't experience the typical "hot ear" syndrome that plagues many closed-back designs. That said, I did notice that the clamping force felt a bit tight for the first week. It eventually smoothed out, but if you have a larger-than-average head, you might find the initial break-in period a bit cozy.

Sound Quality: The "Harman Curve" Masterclass

If you're considering these, you aren't doing it for the features—you're doing it for the sound. Under the hood, these use 40mm Beryllium-coated drivers. In the world of high-end audio, Beryllium is the "gold standard" for diaphragm material because it is incredibly stiff and lightweight, allowing for fast transients and very low distortion. After testing for several hundred hours, I can say that the clarity here is unlike any other wireless headphone I have ever heard. I started my listening journey with some classic Steely Dan, "Aja," and I was surprised by the separation. I could hear the distinct texture of the snare drum and the subtle decay of the cymbals in a way that usually requires a wired connection and a high-end DAC.

The sound signature follows what is known as the Harman Target Curve, which is a frequency response that most listeners find naturally pleasing. In my experience, many "audiophile" headphones can sound a bit thin or overly analytical, lacking "soul." The № 5909 manages to avoid this. The bass is punchy and deep, reaching down into the sub-bass regions without bleeding into the mid-range. I noticed that when listening to Hans Zimmer’s "2049," the low-frequency pulses had a physical presence that felt controlled rather than boomy. What I found was that these headphones don't "tinker" with the music; they just present it with a level of transparency that makes you forget you're using Bluetooth.

Speaking of Bluetooth, these support LDLAC and aptX Adaptive. I mostly used them with an Android device capable of LDAC, and the difference between that and standard AAC (used by iPhones) is noticeable if you’re listening to high-resolution files from Tidal or Qobuz. However, I also spent time using them in wired mode with the included USB-C to 3.5mm cable. This bypasses the internal DSP to some extent and allows you to use your own amplifier. To be honest, I found that they sounded best when powered by their own internal electronics. Mark Levinson clearly tuned the internal DAC/Amp specifically for these drivers, and the synergy is hard to beat even with expensive external gear.

The ANC and Software Experience

One area where I had some reservations was the Active Noise Cancellation (ANC). When you’re competing against the likes of Bose and Sony, the bar is incredibly high. After using them on a flight from New York to London, my findings were mixed. The ANC is very good—it easily handles the low-frequency drone of jet engines and the hum of an air conditioner. I noticed that it didn't have that "cabin pressure" feeling that some people find uncomfortable with the Bose QuietComfort Ultra. However, it wasn't as effective at blocking out higher-frequency sounds like a crying baby or the clattering of a nearby keyboard. In my experience, if you want absolute silence, Sony still has the edge, but if you want the best sound quality while still being able to relax in a noisy environment, the 5909 is the superior choice.

I also need to talk about the app. It’s... basic. In an era where some headphone apps look like futuristic control centers, the Mark Levinson app feels a bit utilitarian. I was disappointed by the lack of a full parametric EQ. You get three "Bass Contour" settings: Brighter, Neutral, and Enhanced. While these are well-tuned, I really would have liked more granular control over the mid-range and treble. One thing that bothered me was a occasional glitch where the app wouldn't recognize the headphones were connected, requiring a restart of the app. It’s a minor quirk, but at this price point, you expect software perfection.

Comparison Table: № 5909 vs. Competitors

Pros and Cons: The Real-World Breakdown

After six months of living with these, I’ve identified a very clear list of things I love and things that I think could be improved. This isn't marketing fluff; this is from the perspective of someone who actually spent the money and uses them every day.

What I Loved

• Unmatched Clarity: The level of detail retrieval for a wireless headphone is simply unparalleled. I heard breathy vocals and finger-slides on guitar strings that I never noticed on my previous daily drivers.
• Exceptional Comfort: Despite being slightly heavier than plastic competitors, the weight distribution is perfect. The leather pads feel like pillows for your ears.
• Battery Life: I consistently get over 30 hours on a single charge. I only have to charge them once a week with heavy use, which is a huge convenience factor.
• Build Aesthetics: They look and feel like a luxury item. Taking these out of the case feels like an "event" every time.
• Wired Performance: The "digital wired" mode via USB-C is fantastic for listening to 24-bit audio from a laptop without needing an extra dongle.

What Disappointed Me

• The Carrying Case: It’s just too big for modern travel. It feels more like a small briefcase than a headphone case.
• Mic Quality: For calls, the microphones are fine in a quiet room, but in a windy outdoor environment, my callers complained that my voice sounded muffled.
• Limited EQ: Only having three bass presets is frustrating for a product aimed at audiophiles who love to tweak their sound.
• The Price: Let’s be honest, you are paying a "luxury tax" for the brand name. While the performance is elite, the value proposition is tough for many people to swallow.

A Buying Guide for the Undecided

If you are trying to decide if the № 5909 is right for you, I’ve found that it really comes down to where you fall on the "Listener Spectrum." I’ve interacted with many fellow enthusiasts who ask me if they should upgrade from their current Bose or Sony setups. My answer is usually "it depends."

If you are someone who listens to music as a background activity—while commuting, doing housework, or at the gym—you probably don't need these. The extra detail and texture they provide will be lost in the noise of your environment. You would be better off with something lighter and more budget-friendly. However, if you are someone who sets aside time to actually listen to an album from start to finish, the № 5909 is a different animal. I found that I actually started looking forward to my evening sessions with these because they revealed so much more of the recording than I was used to hearing on a wireless set.

Another thing to consider is your source gear. If you only listen to Spotify (which uses a lower-bitrate Ogg Vorbis format), you aren't going to get the full benefit of these headphones. To really justify the hype, you should be using a service like Tidal, Qobuz, or Apple Music with Lossless turned on. In my experience, the difference between a high-res stream and a standard stream is much more apparent on the № 5909 than on something like the Bose 700.

Lastly, think about your lifestyle. Are you someone who cares about the tactile feel of your products? I noticed that I get a genuine sense of satisfaction every time I adjust the headband. It clicks with a precision that reminds me of a high-end watch. If you value craftsmanship and longevity—materials like aluminum and real leather won't degrade as quickly as plastic and "protein leather"—then these are a long-term investment rather than a disposable piece of tech.

Daily Usage: The Little Things I Noticed

Beyond the specs, there are small details that only emerge after months of use. One thing I appreciated was the physical buttons. In an era of touch-sensitive panels that often misfire in the rain or when you’re wearing gloves, the № 5909 uses real, tactile buttons. I can reliably pause my music or skip a track without having to fumble around. I also found the "Transparency Mode" to be surprisingly natural. It doesn't have that robotic, processed sound that some headphones have. It sounds like my ears are actually open to the world, which is great for hearing announcements at the airport.

On the downside, I noticed that the sensor that detects when you take the headphones off (to automatically pause the music) can be a bit sensitive. Sometimes if I just shifted the headphones to relieve pressure or adjusted my glasses, the music would pause. I eventually turned this feature off in the app, which is a shame because it’s a useful feature when it works perfectly. I also noticed that the paint, while beautiful, is a bit of a fingerprint magnet. If you’re OCD about keeping your gear looking pristine, you’ll find yourself wiping the earcups down with a microfiber cloth more often than you’d like.

Conclusion

So, is the hype justified? After living with the Mark Levinson № 5909 for half a year, my conclusion is a resounding "yes," but with a major asterisk. If you are looking for the absolute "best" sounding wireless headphone on the planet and sound quality is 90% of your decision-making criteria, then these are the gold standard. They bridge the gap between "convenient Bluetooth audio" and "high-fidelity listening" more successfully than anything else I have ever put on my head. I’ve found that they have replaced almost all of my other headphones for daily use because the trade-off in sound quality compared to a wired open-back set is now small enough to be negligible for most of my listening.

However, if you are looking for a value-for-money proposition, or if your primary goal is to 100% silince the world around you, these may not be the right fit. You are paying for the Beryllium drivers, the luxury materials, and the engineering pedigree of a legendary audio brand. What I found was that the № 5909 isn't just a gadget; it's a piece of audio equipment that respects the music. One thing that hasn't changed since the day I bought them is the way they make me feel when a great track comes on. That sense of "being there" in the studio is something I didn't think was possible over Bluetooth until I used these. In my experience, they aren't perfect—the case is too big, the app is simple, and the price is steep—but for the sheer joy of hearing my favorite songs again for the first time, they have earned a permanent spot on my desk.