Marshall Monitor III A.N.C.

The Marshall Monitor III A.N.C. is a premium wireless over-ear headphone with absurd battery life (70 hours with ANC on), effective noise cancellation, and that signature Marshall rock sound. It's lightweight, foldable, and built to last. Just don't expect great call quality or cool ears in summer.

Battery life is where the Monitor III A.N.C. absolutely flexes. Our database puts it in the 99th percentile for battery, which means it's basically the best you can buy right now. 70 hours with ANC running is more than double what most competitors manage, and the quick charge gives you 12 hours from a 15-minute top-up. That's a full work week of listening from one charge, easy.

Sound quality lands in the 75th percentile, which is strong but not chart-topping. The 32mm drivers deliver that classic Marshall tuning: thunderous bass, screaming highs, and enough midrange detail to keep vocals from getting buried. The new Adaptive Loudness feature adjusts the tonal balance based on volume and ambient noise, so things don't get thin at low volumes or muddy when you crank it. ANC performance is a standout at the 90th percentile. The three-level adjustment (low, mid, high) plus Transparency mode gives you real control, and the continuous ambient noise measurement does a solid job blocking out train rumble and office chatter. Spatial Audio via the Soundstage feature is a nice bonus, though it's more of a fun effect than a reason to buy.

Against the Sony WH-1000XM6, the Marshall Monitor III A.N.C. wins on battery life by a huge margin and arguably on style, but loses on call quality and comfort. Sony's ear cushions are softer and better ventilated, and their mic array is just better for phone calls. The Sennheiser HDB 630 offers more refined, neutral sound if you're into critical listening, but its ANC and battery can't touch what Marshall is doing here. The Technics EAH-A800 is a dark horse with excellent sound, but it's heavier and less portable. And the JBL Tune 670NC is a budget option that gets you decent ANC for less money, but the build quality and sound don't compare. If you're deciding between the Marshall and the Sony, ask yourself: do you take a lot of calls, or do you just want to disappear into music for days at a time?

At $200, the Monitor III A.N.C. undercuts the Sony WH-1000XM6 and Sennheiser HDB 630 on price while delivering better battery life than either. You're trading a bit of sound refinement and call quality for that savings, but for most people, 70 hours of ANC playback is worth more than a slightly wider soundstage. The Technics EAH-A800 is another alternative in this range, but it doesn't match Marshall's battery endurance. If you want the best overall package, Sony still wins on call quality and comfort. But if battery life and that Marshall aesthetic matter to you, this is a genuinely compelling buy.

The Marshall Monitor III A.N.C. sits in that premium wireless over-ear bracket where you expect great sound, solid noise cancellation, and a design that doesn't look like every other black blob on the subway. At $200, it's priced to compete with heavy hitters like Sony's WH-1000XM6 and Sennheiser's offerings, but Marshall brings its own rock-and-roll aesthetic to the table. The Cream colorway especially looks like something you'd find backstage at a gig, not in a tech reviewer's spreadsheet.

So is the Marshall Monitor III A.N.C. good for everyday listening? Short answer: yes, mostly. You get 70 hours of battery with ANC on and 100 hours with it off, which is frankly absurd. Most people will charge these twice a month. The 32mm dynamic drivers push out that Marshall signature sound, which leans into punchy bass and crisp highs without turning your music into mush. And the foldable design with a hard case means these actually travel well, unlike some premium cans that demand their own carry-on.

But there are trade-offs. Call quality is the weakest link here, and comfort is a bit of a mixed bag depending on your head size and the weather. We'll dig into all of that below.

Skip the Monitor III A.N.C. if you take a lot of phone calls, since the mic quality is the weakest part of the package. If you live in a hot climate or tend to run warm, the ear cushions might drive you nuts. And if you have a smaller head, the slightly large fit could be an issue. For call-heavy users, the Sony WH-1000XM6 is a better choice. For hot weather comfort, look at the Sennheiser HDB 630 with its more breathable pads.

Should you buy the Marshall Monitor III A.N.C.? If battery life is your top priority and you love the Marshall sound signature, absolutely. These are the headphones for people who forget to charge things and hate doing it anyway. The ANC is genuinely good, the build feels rugged, and the foldable design with a hard case makes them easy to throw in a bag.

But if you spend hours on phone calls or live somewhere hot and humid, think twice. The call quality is the weakest part of this package, and those plush ear cushions turn into little saunas in warm weather. For everyone else, the Monitor III A.N.C. is one of the best values in premium wireless headphones right now.