Band: opinion spread · Dot: weighted average
Mostly positive, with a real minority. The outlets that measured it — SoundGuys, TechGearLab, Fnac's lab, Les Numériques — put it at or near the top of the class, and WIRED found only Bose's QuietComfort Ultra clearly better. PCMag, What Hi-Fi, Trusted Reviews, RecordingNOW and four of ten Amazon owners who mention it rank it behind Sony and Bose, especially for voices and aircraft cabins. The sources name the reason themselves: much of the quiet comes from passive isolation in deep, well-sealing cups, which a test rig holds perfectly and a moving head does not.
“Owing in part to excellent isolation, the JBL Tour One M3 posts one of our highest ANC scores as well.”
Christian Thomas, SoundGuys
“The M3 has stellar noise cancellation capabilities.”
TechGearLab
“Turn ANC off, and local sounds like keystrokes are totally eliminated.”
Ryan Waniata, WIRED
“On a plane, it still lets in plenty of cabin noise, requiring a step up in volume to hear music.”
Kob Monney, Trusted Reviews
“I think in perfect conditions with a perfect seal, the ANC can be effective, but it seems to struggle with inconsistency and having to adjust quite often.”
RecordingNOW
Measured
SoundGuys measures about 30 dB of active cancellation below 1 kHz and an 87% average attenuation, level with the Sony WH-1000XM6; TechGearLab measures 31 dB overall and more than 41 dB in the treble; Fnac's lab scores isolation 9.7/10 with no audible leakage. Loud and Wireless' curve puts it 'almost at the level' of the XM6 but less quiet from the lower mids up, with weaker damping below 60 Hz. Les Numériques calls the passive isolation one of the best on the market but finds voices less attenuated than engine noise.
vs. listeners — Every bench result is strong; the weaker verdicts come from planes, trains and street walks. Since the sources attribute a large share of the attenuation to the cups' passive seal, glasses, hair and head shape — which a rig never has — plausibly account for the gap.
