Sound: ********1/2
Value: ****
(Read about our ratings)

Measurements can be found by clicking this link.

I sure didn’t see this coming. Not just because the N⁰ 5909 headphones are the first to wear the Mark Levinson brand, but they’re also priced about twice as high as the next-most-expensive set of noise-canceling Bluetooth headphones.

Certainly, if you’re going to sell a $999 (all prices USD) set of noise-canceling Bluetooth headphones, it wouldn’t hurt for them to wear the Mark Levinson brand—in fact, the N⁰ 5909s are, by far, the least-expensive product the company sells. And Mark Levinson’s a Harman brand, so whoever designed these headphones could tap into the expertise of the team that produced the Harman curve. In fact, they’re said to have the tightest adherence to the Harman curve—which I assume means the “Harman curve lovers” variant, which is the most common.

Mark Levinson

But while the Mark Levinson brand targets audiophiles, the N⁰ 5909s target upscale business travelers instead. They offer the key features biz travelers demand—Bluetooth, adjustable noise canceling, and a fold-flat design with a slim travel case. There are a few nods toward audio enthusiasts, though, including a 40mm beryllium-coated driver in each earcup and the LDAC, aptX Adaptive, and AAC Bluetooth codecs.

Most of the controls are accessed through an app, which lets you switch among three active noise-canceling modes (Low, High, and Adaptive); two transparency modes (Voice Boost and Awareness); and three bass EQ modes (Neutral, Enhanced, and Attenuated). The headphones themselves offer only a few control buttons: power on/off, volume, and ANC on/off. There’s a USB-C port for charging, and this doubles as an analog input. You can get them in black, silver, or red.

In the box

The headphones include a relatively slim, molded travel case. Two USB-C-to-1/8″ (3.5mm) stereo analog input cables are included—one 13′ (4m) long, the other 4′ (1.25m) long. There’s also a USB-C charging cable, a USB-C-to-USB-A adapter, a 1/8″-to-1/4″ (3.5mm-to-6.3mm) adapter, and a dual-mono-to-stereo adapter for use on older airliners. One especially nice touch is that the case includes a zippered sub-case with elastic straps to hold all these doodads, so they’ll always be ready when you need them.

Mark Levinson


It’s a good sign that even though the N⁰ 5909s are a complex set of headphones, I don’t even know if the company included a manual in the package, because it never occurred to me to read it. The controls are plainly marked, and the operation of all the controls in the app is completely intuitive.

I had some trouble figuring out whether the headphones have a passive mode, because even if the headphones are plugged in with the USB-C-to-3.5mm cable, using the controls powers on the headphones. But the headphones will keep going if the battery runs down, although of course the noise canceling and digital signal processing will not function, and the bass response of the headphones will be greatly reduced.

I thought the leather-covered earpads were soft and comfortable, and the headphones had a just-right amount of clamping force; I didn’t have a chance to fly with them, but I’m sure I’d have enjoyed it.

Mark Levinson

Especially since the noise canceling is world-class. With the N⁰ 5909s, Harman has finally achieved eardrum suck—the ability to push the noise canceling far enough to make my ears uncomfortable. So now they’re up there with the best from Bose and Sony. But I’d guess somewhere around half the population isn’t bothered by eardrum suck, and the N⁰ 5909s offer ANC Low and ANC Adaptive modes that can dial back the noise canceling and (for me, at least) eliminate eardrum suck while still providing a very useful amount of noise canceling.


I liked the N⁰ 5909s right away. There aren’t many closed-back headphones about which I don’t have complaints, and there are probably no noise-canceling headphones about which I have no complaints, but the N⁰ 5909s are about as good as it gets in this category, occupying a region somewhere between high-quality passive headphones like the Beyerdynamic T5s (third generation) and noise-canceling headphones like the Bose QC45s.

One reason I insisted on having an open comments section here on SoundStage! Solo is that I knew I’d get useful suggestions from readers. One recently recommended the string quartet recordings on BIS Records—for example, the Escher String Quartet’s Barber & Ives: String Quartets (24-bit/96kHz FLAC, BIS Records / Qobuz). On “I. Chorale. Andante con moto” from Charles Ives’s String Quartet No. 1: From the Salvation Army, the N⁰ 5909s sounded mostly spot-on, with a modest sense of ambience that seemed appropriate for the recording, which I assume was made in a small music hall. I’d guess the cello sounded a little fuller than the real thing, but that’s to be expected from Harman-curve headphones, which have a boost below about 100Hz (cello goes down to 63Hz). There was plenty of detail, although the strings did seem a little on the soft side; a more audiophile-oriented set of cans would have likely given the strings more bite.

Mark Levinson

I got a similar sense when listening to the late jazz pianist Harold Mabern’s Mabern Plays Coltrane (24/48 FLAC, Smoke Sessions / Qobuz). On the Coltrane classic “Impressions,” the sound was generally well balanced, with a tight-yet-full sound on the double bass and beautiful imaging of the drums and piano. That said, I did notice a certain brightness that I didn’t hear in the Ives string quartet—a little more mid-treble edginess and honkiness in the tenor sax than I expected, and perhaps 2 to 3dB more treble zip in the ride cymbal than I imagine was intended. The top octave and a half of treble seemed comparatively muted, though.

Not too surprisingly, the better the recording, the more I liked the N⁰ 5909s’ sound. On Patricia Barber’s recent release Clique (24/176.4 FLAC, Impex Records and on Qobuz at last!), the N⁰ 5909s seemed almost perfectly dialed in. I did hear a little bit of mid-treble boost in Barber’s voice on “Trouble Is a Man,” resulting in a bit of excess sibilance, but the bass seemed perfect—full and powerful, with a realistic sense of attack and drive. The piano sounded palpable and weighty, and the cymbals had a wonderfully spacious and “live” sound.

Mark Levinson

I honestly didn’t expect the N⁰ 5909s to sound great on Mötorhead’s “Love Me Like a Reptile” (Ace of Spades, 16/44.1 FLAC, Sanctuary/Qobuz)—I worried their tonal balance might muddy up the mix—but I felt what I heard was a very accurate representation of the band’s sound. Other than the kick drum, there’s not a ton of bottom end on Mötorhead records because bandleader Lemmy Kilmister played a trebly sounding Rickenbacker bass with a pick in a unique strumming style. Yet “Love Me Like a Reptile” had a huge, satisfying sound that captured all the snap of the snare, the grind of the guitar, and the hoarse croak of Lemmy’s voice just perfectly without sounding in any way fatiguing. In fact, I wanted to crank it up louder than I usually like to listen.

It’s worth noting that switching my Samsung Galaxy S10 phone over to LDAC did improve the sound a bit—it had a little more clarity in the treble, mainly—and I got a similar result when I used the wired connection. I did most of my listening with noise canceling on, although switching noise canceling off didn’t seem to change the sound much.


I compared the N⁰ 5909s to a few different headphones, but mostly to the Bose QC45 noise-canceling headphones ($329) and the Beyerdynamic T5 (third generation) closed-back passive headphones ($999). Sadly, I didn’t have the DALI IO-6 headphones on hand; they’re the most expensive ($499) noise-canceling headphones I can remember previously testing, but I’ll include them in the measurements section (accessible from the link at the top of this article) so you can get some idea of how they compare.

The Lumineers’ “Where We Are” (Brightside, 16/44.1 FLAC, Dualtone Music Group / Qobuz) clearly revealed the sonic differences among these headphones. To me, the T5s (powered by a THX Onyx DAC-amplifier) exhibited the most dynamic sound, the most vivid sonic images, and the biggest sense of space. It did seem to me that they had a little extra energy—maybe 2 or 3dB—in the 3-to-4kHz range. The N⁰ 5909s had even more treble presence—I’d say a boost of about 4 or 5dB, more up around 5kHz or so—and a few dB extra bass, too. The QC45s sounded fairly well balanced, but they had too much energy around about 200Hz, which muddied up the bass and gave it an exaggerated sense of punch from the kick drum and toms. They also lacked a bit of detail compared with the N⁰ 5909s.

A more typical pop recording, Fleetwood Mac’s “You Make Loving Fun” (Rumours, 24/96 FLAC, Rhino-Warner/Qobuz), gave me a clearer picture of the N⁰ 5909s compared with the others. Overall, I’d consider the N⁰ 5909s’ bass to be perhaps slightly elevated in level but generally realistic and neutral, and they sounded a little more lively and spacious than the QC45s. But I wouldn’t consider them “audiophile-grade noise-canceling headphones,” because I honestly haven’t yet heard anything I’d describe that way.


For noise-canceling headphones, the N⁰ 5909s sound very good. In fact, I’d say the only noise-canceling headphones I might like as much sonically are the DALI IO-6es—but I consider the noise canceling on the IO-6es so weak that it’s barely worth using. I love the N⁰ 5909s’ features, the comfort, and the app. And the noise canceling is fantastic—something that’s almost never true of noise-canceling headphones from the storied brands of the audio biz. So I guess what I’m saying here is that they’re probably my favorite noise-canceling headphones to date.

Mark Levinson

That said, while the N⁰ 5909s are, in my opinion, the noise-canceling headphones that get the most things right, they’re double the price of what I’d consider their nearest competitor, and any advantage they have over much less costly noise-canceling models from Bose and Sony seems mild.

. . . Brent Butterworth
This email address is being protected from spambots. You need JavaScript enabled to view it.

Associated Equipment

  • Smartphone: Samsung Galaxy S10

Mark Levinson N⁰ 5909 Bluetooth Noise-Canceling Headphones
Price: $999.
Warranty: Two years.

Mark Levinson
Phone: (888) 691-4971

Website: www.marklevinson.com

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  • This commment is unpublished.
    Nico · 2 years ago
    Tnx for this amazing headphone review. Actually I am thinking of buying this one or Dali io-6.
    Which one have better bass? I know they both sound natural but I like a slight emphasis on bass just to make it a bit more fun. How do they compare in sound and loudness?
    Thank you
  • This commment is unpublished.
    Stef · 2 years ago
    How does this no. 5909 compares to B&O H95?
  • This commment is unpublished.
    Ragav · 2 years ago
    For $299, the AKG N700NC M2 headphones have the same sound quality, good ANC, and most of the Mark Levinson headphone features. It looks stunning and comes with the same case as the 5909!! I’d be grateful if you could review the AKG N700NC M2 as well as the K371-BT. They’re both phenomenal value at their price points!!!!!
    • This commment is unpublished.
      Brent Butterworth · 2 years ago
      Hi, Ragav. What's the N700NC M2? Is that a Mark II version? I see that on Amazon's site, but on the AKG site they just show an N700NC (no M2). In both cases, they're being blown out for ~$99, which suggests they're discontinued, so I can't test them. I have measurements for the (original?) N700NC (did them for Wirecutter) but never reviewed them -- sound was nice but I found the design uncomfortable for me.
  • This commment is unpublished.
    Mauro · 2 years ago
    Sean Olive posted this on twitter.
    it seems different from all your measurements. Mmhhhhh…
    i am a bit confused🤔
    • This commment is unpublished.
      Brent Butterworth · 2 years ago
      The curve I published is the result of lots of trials, so I feel it represents the performance of the sample I had. As I'm sure you know from looking at a lot of these charts, there are two places where headphone measurements tend to vary a lot. Below 200 Hz, the measurements can vary depending on the seal of the ear pads on the measurement device; usually these variances result mostly in level differences in the bass. Above about 3 kHz, the measurements can vary due to effects of slight positioning differences between the simulated pinna and the headphones; this tends to show up as high-Q reinforcement/cancellation peaks/dips.

      So that's a long-winded way of saying I have no idea how that midrange bump I found could be a measurement artifact. Also, my listening impressions and what I heard from Lauren Dragan at Wirecutter confirm that this sample sounds treblier than we'd anticipated, so I expect that the elevated treble I saw in the measurements does reflect the performance of this sample. Maybe it's a sample-to-sample variation. Considering how many reviews have already been published, and therefore how many samples have gone out, I doubt the samples were QC'ed.

      I will say that it's very difficult to tell what mode these are in, and the measurements are further complicated by the fact that to test the different modes, you have to connect through Bluetooth, make the mode selection in the app, then disconnect and reconnect to a Bluetooth transmitter or through the cable, and it's difficult at best to confirm if the listening mode was preserved when the connection was switched. So I am not 100% confident in my identification of the different modes in the charts.
      • This commment is unpublished.
        Mauro · 2 years ago
        Thanks for all the clarifications and prompt reply. I checked a bit further. FYI it is analog in wired.
      • This commment is unpublished.
        oratory1990 · 2 years ago
        You might want to take a look at open-loop testing, which would allow you to play the stimulus through e.g. your phone, eliminating the need to connect the headphones to a bluetooth transmitter for measuring (instead you'd be using the phone)

        This would allow you to quickly change modes and perform measurements.

  • This commment is unpublished.
    MTL · 2 years ago
    Hi Brent, thanks for the review.
    A few questions regarding the measurements :
    - Unless I'm mistaken I believe that you average individual traces. With ANC on, were the individual traces consistent or quite random ?
    - Were you able to double-check with noise as a signal and RTA tools whether or not the ANC results were the same as with sweeps ?
    - Have you tested how the headphones behave under various levels of pad compression or when breaching seal, a bit like what DIYaudio does ?
    The AirPods Pro and Max with ANC off (and to a lesser degree when on), or the Airpods 3, are examples of headphones where this matters as their feedback mechanism is still activated, even when ANC is off, but doesn't work properly with narrower signals (
    The JBL Tour One uses an ANC chip Harman had never used before on a pair of over-ears (https://ams.com/-/harman-anc), and Rtings encountered consistency issues when measuring them on real humans (https://www.rtings.com/headphones/reviews/jbl/tour-one-wireless).
    This could help better understand how the 5909's ANC system works.
    Best regards.
    • This commment is unpublished.
      MTL · 2 years ago
      I've just realised that I might not have been clear enough : I'm taking about the FR measurements with ANC on, not the performance of the noise reduction.

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