Band: opinion spread · Dot: weighted average
Sources split. Every rig measures the same narrow peak near 6 kHz after a 4–5 kHz dip, with more peaks higher up. A weighted majority — the measurement benches, Resolve, Headphones.com's own critics, SBAF regulars and several owners — hear it as sibilant, metallic or fatiguing. A large minority — Stereophile, The Absolute Sound, The Verge, Headphones.com's 2018 reviewer and happy owners — hear a treble that is natural, resolving and at most slightly edgy. Treble sensitivity, bright recordings and a sharp-sounding source chain decide which camp you land in.
Measured
Every rig shows a narrow ~6 kHz peak after a 4.5–5 kHz dip: 3–6.5 dB above 5 kHz and 5–13 dB above 7 kHz on the sai (GRAS 43AG-4), listener (B&K 5128) and earphonesarchive databases, and ~3.6 dB above 5 kHz on oratory1990's GRAS. ASR singles out an 11.3 kHz peak as the source of its 'brightness'; Stereophile saw a 3.5 kHz peak and 'a small subsequent peak at 6kHz'. Above 8 kHz the rigs disagree by up to ~10 dB (HypetheSonics reads 8–12 kHz hot, oratory1990 reads it recessed), so claims about 9–11 kHz 'peaks' depend on the rig and the seating.
vs. listeners — The narrow peaks are measured by everyone; whether they read as 'lispy' and metallic or as natural bite is not something the graphs settle. Reviewers on both sides name the same levers: treble sensitivity, bright recordings, and the source chain — several SBAF owners report the metallic sheen faded after a DAC or amp change, while others call it a trait of the metal driver.
“It created fair amount of "lispiness" with female vocals for example.”
Audio Science Review (amirm)
“Treble tonal balance is spot on and wonderfully resolving. Cymbals, strings, and trumpets sound fantastically true to nature.”
Stereophile (Tyll Hertsens)
