Band: opinion spread · Dot: weighted average
Sources split three ways. The largest group hears an excited, V-shaped default — lifted bass and bright treble around a dipped midrange — that sounds best after a little EQ; a sizeable group hears a balanced, accurate tuning true to Shure's studio reputation; and one reviewer hears it warm, led by the bass and lower midrange.
Measured
On RTINGS' HMS II.3 rig, normalised at 500 Hz, the curve sits about 4–6 dB above RTINGS' target from 100 to 200 Hz, 3–7 dB above it from 1 to 3 kHz and 8–12 dB above it from 5 to 8 kHz (a rig that reads treble high on most headphones). On the same rig it has more energy than the first-generation AONIC 50 at 20 Hz (+7 dB), around 1–1.5 kHz (+3 to +4 dB) and at 6–8 kHz (+3 to +4 dB), and RTINGS calls it less neutral than its predecessor. SoundGuys measures a dip in the midrange against its preference curve; Les Numériques describes lifted bass, a slightly recessed midrange, a lift in the upper mids, a treble dip and a second lift around 10 kHz.
vs. listeners — Both measuring outlets find bumps rather than a flat line, which backs the 'excited' camp; the 'balanced' camp hears the same shape as coherent and well controlled. Two variables move the result: wired listening (What Hi-Fi? and eCoustics found USB-C or analog smoother or more balanced than Bluetooth) and noise cancelling (What Hi-Fi? hears the bass fatten and dynamics shrink with it on). STEREO's lab test called the neutral setting clearly coloured and lacking power.
“Sans être linéaire, la réponse en fréquence est assez équilibrée et maîtrisée pour apporter une bonne qualité sonore.”
Les Numériques (Guillaume Fourcadier) — "Without being linear, the frequency response is balanced and controlled enough to deliver good sound quality"
“Out of the box, their default sound is pretty excited and isn't very neutral.”
RTINGS
“this adjustment was necessary because the sound of these headphones was dominated by the lower mid-range and the bass that followed it.”
headphonecheck.com (Carsten Kaiser)
