Band: opinion spread · Dot: weighted average
Sources split almost exactly in half, and they split on the meaning rather than the shape. Every rig shows the same dark, mid-forward curve with a deep presence dip. Most editorial reviewers and many owners hear a neutral-to-warm, relaxing headphone that is right as it comes, especially for rock, pop and older or brighter recordings. The measurement sites, the headphones.com reviewers and a vocal set of owners call it colored, "dark and sharp at the same time", and treat EQ (or Audeze's Reveal plug-in) as part of owning it.
Measured
oratory1990's GRAS data scores 50/100 against the Harman target before EQ and 86/100 after. His correction is a +6 dB high shelf from 1.3 kHz, a 5 dB cut at 5.9 kHz and a +5.5 dB bass shelf. On rigs that also hold an HD 600, the LCD-2C sits 7–9 dB below it at 4 kHz on every one (oratory, Earphones Archive 5128, Sai's GRAS, InnerFidelity, Boizoff). Crinacle grades its tone C and its technical performance A. SBAF's purr1n measured three units and graded their sound A, C- ("too laid back") and B+, so some of the split may be unit-to-unit.
vs. listeners — There is no measured dispute, only a preference one. The same curve reads as neutral with a warm roll-off to listeners who want the edge taken off modern recordings, and as a target miss needing a 6 dB correction to those who score against Harman. DIY-Audio-Heaven puts the split plainly: "The darker tonal balance is something many early LCD-2 owners liked about it but others complained about."
“In general, the LCD2 Classic is neutral with a slightly warming roll-off above 1kHz.”
InnerFidelity / Stereophile (Tyll Hertsens)
“These headphones really need some EQ for me and it looks like Audeze agrees as they supply their own EQ program.”
DIY-Audio-Heaven (Solderdude)
