Band: opinion spread · Dot: weighted average
Sources split: about two-thirds hear a well-judged, bass-forward consumer tuning that is pleasant and engaging; about a third hear a dull, lifeless balance that needs EQ to open up. Both camps describe the same measured shape — the disagreement is whether a recessed 3–5 kHz reads as 'smooth and inoffensive' or 'missing'. Apple's Headphone Accommodations or a simple two-filter EQ moves several critics to the positive side.
Measured
Across six rigs (oratory1990 GRAS, RTINGS and Earphones Archive B&K 5128, boizoff, Gadgetry Tech and Kyle @ Den-Fi ear simulators): within ~0.5–2.8 dB of the Harman over-ear shelf below 100 Hz, flat from 100 Hz to 1 kHz, a small ear-gain peak at 2.7–3.2 kHz, and 3–5 kHz 4–8 dB under the HD 600 on the same rig. ASR: 'full compliance with our reference curve all the way to 1 kHz but then the wheels fall off.' RTINGS classes it 'Warm' (bass +1 dB, treble −4 dB).
vs. listeners — The graph is agreed; the verdict isn't. Measured against a target, the 1–7 kHz shortfall is a flaw (ASR, SoundStage!); heard against other ANC headphones, which are often bassier and muddier, the same curve reads as balanced (Crinacle, What Hi-Fi, Tom's Guide). Owners on ASR's own thread report its EQ as both transformative and 'absolutely unlistenable'.
“very well-tuned headphone, even within the context of the “hifi audiophile” models”
Crinacle (In-Ear Fidelity)
“Without EQ, the Apple AirPods is one terrible sounding headphone.”
Audio Science Review (amirm)
