The catch
Marshall Monitor III A.N.C.
No water-resistance rating is stated for it.
Side by side
Marshall Monitor III ANC vs Sennheiser MOMENTUM 4 Compared: Momentum adds documented USB audio, Marshall folds
Quick verdict
Go with Monitor III ANC for a lighter folding design and a longer battery claim. MOMENTUM 4 is the better match if your setup needs documented USB audio and analog backup.
Before you buy
Why, and what it costs you
Plan your charging around how long you listen
Listening eight hours a day, Marshall Monitor III A.N.C. claims the equivalent of 8.8 days in standard ANC mode and Sennheiser MOMENTUM 4 Wireless claims 7.5 days. Leave headroom for real use.
Where this comes from
Formula: claimed ANC runtime / 8 hours per day, with 70 and 60 hours as inputs. It is a planning conversion of separate manufacturer maximums. No endurance was measured.
The catch
Sennheiser MOMENTUM 4 Wireless
The cups swivel flat, yet they do not fold inward.
Marshall Monitor III A.N.C.
- Why pick it
- Bring a headphone that folds on a long trip
- Want a lighter design
- The catch
- No water-resistance rating is stated for it.
Sennheiser MOMENTUM 4 Wireless
- Why pick it
- Play USB audio at a computer
- Require documented passive analog playback
- The catch
- The cups swivel flat, yet they do not fold inward.
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What this page compares
Monitor III ANC is the choice for a lighter folding design and a longer battery claim, while MOMENTUM 4 suits a setup that needs documented USB audio and analog backup.
Marshall folds and claims long endurance
Which one fits
Pick the situations that sound like you
Bring a headphone that folds on a long trip
Monitor III comes in at 250 grams and claims 70 hours with ANC. MOMENTUM 4 is 293 grams, cannot fold inward and claims 60 hours.
- Marshall Monitor III A.N.C.
- Better fit
- Sennheiser MOMENTUM 4 Wireless
- Depends
Play USB audio at a computer
Digital USB audio and passive analog listening are both supported. A USB charging socket on another headphone is no proof that it supports USB audio.
- Marshall Monitor III A.N.C.
- Depends
- Sennheiser MOMENTUM 4 Wireless
- Better fit
Look at the whole setup
Marshall's 100-hour headline applies with ANC off. The 70-hour ANC figure is the relevant one to set beside Sennheiser's 60-hour ANC claim.
- Marshall Monitor III A.N.C.
- Depends
- Sennheiser MOMENTUM 4 Wireless
- Depends
Marshall pairs a 43 gram weight saving with 10 more claimed ANC hours
Compared with MOMENTUM 4, Monitor III weighs about 15% less and its manufacturer ANC runtime claim is roughly 17% higher.
- Marshall Monitor III A.N.C.
- Depends
- Sennheiser MOMENTUM 4 Wireless
- Depends
In practice
Differences you will notice
Plan your charging around how long you listen
Listening eight hours a day, Marshall Monitor III A.N.C. claims the equivalent of 8.8 days in standard ANC mode and Sennheiser MOMENTUM 4 Wireless claims 7.5 days. Leave headroom for real use.
How we worked this out
Formula: claimed ANC runtime / 8 hours per day, with 70 and 60 hours as inputs. It is a planning conversion of separate manufacturer maximums. No endurance was measured.
Weigh what you will wear on your head
Marshall Monitor III A.N.C. is 250 grams, Sennheiser MOMENTUM 4 Wireless is 293 grams, and the gap is 43 grams. Comfort still comes down to clamp force, fit and padding.
How we worked this out
The absolute weight difference is |250 - 293| grams. Cases and most accessories are not part of manufacturer headset weights.
Marshall pairs a 43 gram weight saving with 10 more claimed ANC hours
Compared with MOMENTUM 4, Monitor III weighs about 15% less and its manufacturer ANC runtime claim is roughly 17% higher.
How we worked this out
Working: 293 - 250 = 43 g, 43 / 293 × 100 = 14.7%, and (70 / 60 - 1) × 100 = 16.7%. Published figures are used here and not a matched test.
Plug in your setup
Which headphones suit the way you listen?
Start with how you listen. Charging over USB is not the same as playing audio over USB, and some headphones need power even on a cable. These answers are placeholders until you apply your own.
Marshall Monitor III A.N.C.
Passes these checksPlays over Bluetooth.
Sennheiser MOMENTUM 4 Wireless
Passes these checksPlays over Bluetooth.
Battery figures are maker claims for the stated mode. They do not reflect measured travel time. Volume, codec, calls and battery age all change runtime. Closed earcups can still leak some sound. Weight alone does not predict comfort. USB audio needs a compatible source and cable. This check does not judge sound quality, mic quality or amplifier power.
Option A
Marshall, Monitor III A.N.C.
Monitor III A.N.C.
This folding over-ear pair has a 70-hour ANC-on claim and weighs 250 g. It suits long trips where you would rather charge less often.
- Best for
- ANC on long travel days, with fewer stops to charge
Facts we checked
- Marshall's playback rating is 100 hours without ANC and 70 hours with it.
- The weight, as listed, is 250 g.
- Bluetooth multipoint is supported, and the over-ear design folds.
Option B
Sennheiser, MOMENTUM 4 Wireless
MOMENTUM 4 Wireless
If you would rather charge rarely than fold the headphones small, this is a strong fit. It combines a 60-hour ANC claim with USB audio and a passive analog fallback.
- Best for
- Wired listening that stays flexible, with long gaps between charges
Facts we checked
- Over Bluetooth with ANC, the rating is up to 60 hours, tested with an iPhone at mid volume.
- It weighs approximately 293 g.
- USB audio and a detachable 2.5-to-3.5 mm analog cable are supported.
- Codec support covers SBC, AAC, aptX and aptX Adaptive.
Spec by spec
Where they really differ
| Spec | Marshall Monitor III A.N.C. | Sennheiser MOMENTUM 4 Wireless | In practice |
|---|---|---|---|
| Headphone weight | 250 g | 293 g | The figure leaves out the case, accessories and cables. |
| Standard ANC battery claim | Up to 70 h | Up to 60 h | Runtime can drop with volume, calls, codec choice and special modes. |
| USB digital audio | Not established | Yes | Having a charging port does not by itself mean audio is supported. |
| Battery-free analog playback | Not established | Yes | Powered noise cancellation is not part of passive listening. |
| Folds inward | Yes | No | Folding affects the shape you pack in addition to the headphone's weight. |
| Two-device Bluetooth multipoint | Yes | Yes | Automatic switching tied to one brand is a separate feature. |
Trade-offs
What each pick costs you
With Marshall Monitor III A.N.C.
- For wired listening you need the supplied USB-C-to-3.5 mm lead, so hold on to it.
With Sennheiser MOMENTUM 4 Wireless
- Accentum Plus weighs 66 g less than its 293 g.
Decision guide
How to decide
Pick Monitor III ANC for a lighter folding design and a longer battery claim. Pick MOMENTUM 4 when the setup calls for documented USB audio and analog backup.
Marshall folds and claims long endurance
Monitor III comes in at 250 grams and claims 70 hours with ANC. MOMENTUM 4 is 293 grams, cannot fold inward and claims 60 hours.
Sennheiser documents its wired fallback clearly
Digital USB audio and passive analog listening are both supported. A USB charging socket on another headphone is no proof that it supports USB audio.
Compare with noise cancelling switched on
Marshall's 100-hour headline applies with ANC off. The 70-hour ANC figure is the relevant one to set beside Sennheiser's 60-hour ANC claim.
What this page can’t tell you
- Published specifications and the stated calculations are the basis for these conclusions. No hands-on performance test is involved.
By the numbers
What the data shows
What we found across the headphones we compare, plus the checked facts behind each finding.
How many fit
This guide keeps all 60 models in play. The pick rests on the facts and trade-offs on this page.
60 models fit, out of 60 checkedShow the facts and the math
How we countedNo needs are preselected here. Open the matcher and add the ones that apply to your home, room or setup.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Marshall Monitor III A.N.C. | None of these needs is a documented match |
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| Sennheiser MOMENTUM 4 Wireless | None of these needs is a documented match |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Marshall Monitor III A.N.C.
Bring a headphone that folds on a long trip
See price & reviews on AmazonSennheiser MOMENTUM 4 Wireless
Play USB audio at a computer
See price & reviews on AmazonEach link opens in a new tab.
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