If you want better Codec support
Choose Marshall Milton A.N.C.. It scores 5.0 vs 2.0 for Codec support, with a 4.2 overall score.
Marshall Monitor III A.N.C. Over-Ear Bluetooth Headphones Review
Bottom Line
Choose the Marshall Monitor III ANC for class-leading battery life, plush comfort, rugged travel design, and lively rock-friendly sound. Skip them if you need elite ANC, hi-res codecs, or a built-in 3.5mm jack.
Best for
Best for travelers, commuters, and Marshall-style fans who want very long battery life, soft comfort, rugged folding portability, and a lively sound that suits rock and instrument-forward music.
Not for
Not for buyers who need class-leading ANC, hi-res or low-latency Bluetooth codecs, a passive 3.5mm jack, or the most natural spatial audio and transparency modes.
Verdict
Reviewers consistently framed the Marshall Monitor III ANC as a characterful premium travel headphone rather than a pure tech benchmark. The strongest agreement centers on the enormous battery life, soft long-wear comfort, compact case, tactile controls, and rugged Marshall styling. The main tradeoff is performance polish: ANC is usually described as good or decent rather than Bose/Sony level, codec support is limited, and the missing built-in 3.5mm jack frustrates wired-use buyers. Sound impressions are generally positive, especially for rock, metal, jazz, and other instrument-driven genres, though bass lovers and spatial-audio fans may find stronger alternatives.
Feature Scorecards
Summary
81 reviewed features-
Very positive 4.5-5.034 (42%)
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Positive 3.5-4.432 (40%)
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Neutral 2.5-3.48 (10%)
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Negative 1.5-2.47 (9%)
Pros
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Multipoint reliability was strong where tested, with seamless switching or extremely reliable two-device use.
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Cable quality received praise in one review for the black cable with brass tips and premium-feeling presentation.
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Hinge durability was praised for being able to twist without showing signs of breaking.
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Streaming service integration was praised strongly for Spotify Tap, especially for starting playback without pulling out a phone.
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One reviewer found the headphones plenty loud, with comfortable listening volume well below maximum.
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Battery life had the strongest agreement: reviewers repeatedly described it as class-leading, incredible, extraordinary, or far ahead of competitors.
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Comfort was one of the strongest consensus wins, with reviewers repeatedly praising all-day wear, soft fit, and low fatigue.
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Ear cup padding was widely praised as extremely soft, plush, pillow-like, and important to comfort and sealing.
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Charging was praised for fast top-ups, with reviewers citing up to 12 hours of playback from a short charge.
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Portability and foldability were major strengths thanks to the compact folding design and small travel footprint.
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Button controls were a standout strength, with reviewers preferring the tactile joystick and physical buttons over touch controls.
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Travel friendliness was a major strength due to battery life, compact folding, wired flexibility, and protective case design.
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Weight comfort was a major strength, with reviewers repeatedly calling the headphones light for the class and easy to wear.
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Durability over time was viewed positively because reviewers described more durable, repairable construction and long-term toughness.
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Clamping comfort was rated very highly, with reviewers reporting little to virtually zero pressure.
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Headband comfort was praised for reducing top-of-head pressure through light weight and support-strap design.
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Premium feel was praised through richer materials, superior build impressions, and a luxurious presentation.
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Maximum-volume clarity was strong in the reviews that addressed it, with no audible or max-volume distortion reported.
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Call microphone quality received strong praise from one reviewer, especially for windy phone calls.
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Setup simplicity received praise from one reviewer who called pairing/setup easy.
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Microphone noise reduction was praised for handling simulated or real wind well, despite some vocal-clarity caveats elsewhere.
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Build quality was generally strong and rugged, with praise for durability and materials, offset by one report of creaking.
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The carry case was usually praised as sturdy, compact, premium, or travel-friendly, though a few reviewers found it bulky or unnecessary.
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Design and aesthetics were mostly praised for the distinctive Marshall look, premium detailing, and rugged styling, though taste varied.
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Passive isolation was praised for the soft cushions and seal, which helped block noise even before ANC was considered.
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Replaceable earpads were praised as easy to remove or replace and useful for longevity.
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Sustainability and repairability were praised for replaceable parts and repair-minded design, with a caveat that batteries are not user-replaceable.
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Bluetooth performance was praised in one review as stable and high-performance.
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Bluetooth version support was tied to a stable, high-performance wireless connection in one review.
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Included accessories received praise for the attractive red-velvet case and included cables.
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The preset EQ experience was praised in one review, especially the bass boost setting for adding dynamic sound without excess bass.
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Replaceable pads and headband parts were a repairability plus where described.
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Connection stability was praised as stable and high-performance in one review.
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Voice prompts and feedback added personality through Marshall-style guitar sounds during power and pairing.
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Aesthetics were distinctive and often praised, but some reviewers noted the retro Marshall look will not suit everyone.
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Instrument separation was a consistent strength when mentioned, with reviewers noting solid layering, instrument placement, and separation across bass, mids, and highs.
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The app was viewed positively for customization, controls, battery options, and a generally intuitive experience.
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The default frequency response was judged broadly listener-friendly, especially for casual listeners.
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Overall recommendations were positive but caveated: reviewers liked the package, especially for travel and rock-focused listening, while noting ANC, codecs, and wired tradeoffs.
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EQ customization was broadly useful and responsive, though one reviewer wanted more precision than the five-band setup provides.
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Reviewers generally liked the sound, describing it as pleasing, energetic, balanced, or excellent, with the strongest praise for rock and instrument-driven listening.
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Headband adjustability earned a small positive note for visible adjustment numbering.
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Auracast support was treated as a positive future-facing feature, especially for Android and LE Audio readiness.
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Sound leakage was viewed positively in one review because the plush ear cups helped minimize leak.
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Smart listening features were mixed: adaptive volume, Spotify Tap, and battery preservation drew praise, while missing convenience features held the score down.
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Ear cup rotation and swivel helped portability, though one reviewer found the twisting mechanism odd on the head.
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LE Audio readiness was treated as a positive future-proofing feature by multiple reviewers.
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Bass was usually described as punchy or well-balanced, though several reviewers said it could use more impact, cleaner control, or stronger low-end weight.
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Midrange impressions were mixed: some praised vocals and instruments, while others heard under-emphasized mids, prominent high mids, or occasional clutter.
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Advanced software features were considered solid and modern, but reviewers did not see them as uniquely class-leading.
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ANC background noise performance was decent: one review measured strong overall noise reduction, and another said white noise was not bad.
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Android compatibility was positive in one review that found the headphones sounded good on Android.
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Multi-platform compatibility was positive where tested on both iOS and Android.
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Sustainability materials received a modest positive note for recycled plastic use.
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Value was generally fair to good, especially on sale, but reviewers noted strong cheaper or better-performing rivals.
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Integrated microphone feedback was mixed, with clear/crisp quiet-room results but criticism of vocal clarity or noisy-environment performance.
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ANC was usually judged good, solid, or decent for daily use, but several reviewers said it still trails Bose, Sony, or the top tier.
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Transparency mode was considered usable and sometimes natural, but reviewers also noted hiss, limited realism, or weaker performance than the best rivals.
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Treble feedback was split between clear, impressive highs and complaints about sibilance, fatigue, or sharpness on some tracks.
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ANC-off listening measured slightly better in one review, suggesting ANC can subtly affect the sound signature.
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ANC slightly affects audio performance, with one review noting higher sound-quality scores when ANC is disabled.
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Soundstage width drew mixed reactions, from solid or opened-up presentation to narrow, cluttered, or not true-spatial enough.
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Wind handling was mixed: one reviewer found wind susceptibility in ANC/transparency, while another found moderate wind manageable.
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Features at launch were adequate but not standout, with one reviewer saying the standard feature set lacked a truly distinctive tool.
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Immersive audio quality was mixed, with some reviewers enjoying the added atmosphere and others finding the effect limited or not truly immersive.
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Connectivity options were mixed: wired and wireless playback were useful, but the lack of a built-in 3.5mm jack and coiled cable hurt convenience.
Cons
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Spatial audio was divisive: some liked the extra space, but others found it unnatural, underwhelming, or below true Atmos-style experiences.
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USB-C was useful for charging and wired listening, but reviewers criticized the one-port limitation and need for power in wired use.
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Auto-play and wear detection worked but was slow to react in one test.
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Wear detection auto-pause was only moderately successful, working but reacting slowly.
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Audio-video sync was a concern for gaming because one reviewer tied the lack of low-latency codecs to more noticeable latency.
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Sensor performance was a concern because one reviewer reported random wear-sensor triggers.
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Smart Pause performance was criticized for random triggering in one longer test.
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Wear detection performance was a weakness in one longer test because the sensor randomly triggered.
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The lack of a built-in 3.5mm analog jack was a repeated drawback, even though USB-C-to-3.5mm wired listening is possible.
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Codec support was a clear weakness because reviewers noted no hi-res, lossless, or low-latency codec support.
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Hi-res playback support was a weakness because reviewers repeatedly noted no hi-res Bluetooth audio support.
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aptX support was criticized as absent, especially for Android or lossless-codec users.
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Earpad/body-borne noise was a notable negative for one reviewer, who heard footsteps and heartbeat-like sounds.
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LDAC was only discussed as an absent higher-quality codec, making it a codec-support weakness.
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Water and sweat resistance was a weakness because reviewers noted the headphones are not waterproof and should avoid rain or gym use.
Compared With Category Average
Compared with other Over-Ear Headphones, this product is above average in Cable quality, Streaming service integration, Portability/foldability, near average in Aesthetics / discreet profile, Spatial audio, below average in Built-in DAC and hi-res playback, Codec support, 3.5mm analog input availability.
Summary
81 compared features-
Above average 0.4+ pts higher38 (47%)
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Same as average within 0.3 pts31 (38%)
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Below average 0.4+ pts lower12 (15%)
Largest category differences
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| Built-in DAC and hi-res playback | 2.0 | 4.0 | -2.0 |
| Cable quality | 5.0 | 3.0 | +2.0 |
| Codec support | 2.0 | 3.8 | -1.8 |
| 3.5mm analog input availability | 2.1 | 3.7 | -1.7 |
| Streaming service integration | 5.0 | 3.4 | +1.6 |
| Portability/foldability | 4.8 | 3.5 | +1.3 |
| Audio-video sync accuracy | 2.8 | 4.3 | -1.5 |
| aptX | 2.0 | 3.4 | -1.4 |
Consider This Instead
If you want better Built-in DAC and hi-res playback
Choose Cambridge Audio Melomania P100 Headphones. It scores 4.6 vs 2.0 for Built-in DAC and hi-res playback, with a 4.1 overall score.
If you want better 3.5mm analog input availability
Choose Sony 1000X The Collexion. It scores 4.5 vs 2.1 for 3.5mm analog input availability, with a 4.1 overall score.
If you want better aptX
Choose Cambridge Audio Melomania P100 SE Headphones. It scores 5.0 vs 2.0 for aptX, with a 4.2 overall score.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- More expensive: price T3 says the Marshall is less expensive than Apple AirPods Max.
- Worse: battery life TechRadar says the Marshall lasts much longer than Apple AirPods Max.
- Compared: overall premium headphone competition RecordingNow says the Marshall competes very well against Apple AirPods Max.
- Compared: overall premium headphone competition RecordingNow says the Marshall competes very well against Sony WH-1000XM6.
- Worse: battery life Reviewer says the Marshall more than doubles Sony WH-1000XM6 battery life.
- Worse: battery life TechRadar says the Marshall exceeds Cambridge Audio Melomania P100 battery life.
FAQ
How good is the battery life?
Reviewers strongly agree that battery life is the standout feature. Multiple reviews describe the 70-hour ANC-on claim and up to 100 hours with ANC off as class-leading or far ahead of rivals.
Are the Marshall Monitor III ANC comfortable for long sessions?
Yes. Reviewers repeatedly praised the light weight, soft ear pads, low clamping pressure, and ability to wear them for long workdays or travel sessions.
Is the noise cancellation top-tier?
No. Most reviewers called ANC good, solid, or useful for travel and daily environments, but several said Bose and Sony still perform better.
Do they have a 3.5mm headphone jack?
They do not have a built-in 3.5mm analog jack. Several reviewers disliked this, though the headphones can use wired audio through USB-C with an included USB-C-to-3.5mm cable.
What music do reviewers think they suit best?
Reviewers most often connected the tuning to rock, metal, jazz, classical, and other instrument-driven music. Some said EQ helps modern pop, hip-hop, or electronic music, but bass-heavy listeners may want more slam.
Are the app and controls useful?
Yes. The app, physical joystick, ANC button, M button, EQ, Spotify Tap, and battery-preservation options were generally praised, although spatial audio and wear detection drew mixed reactions.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
YouTube - Youtube
- Review score
- 4.8
YouTube - Youtube
- Review score
- 3.9
Article Reviews
androidcentral.com
- Review score
- 4.5
techradar.com
- Review score
- 4.1
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