Starting a thread -- separate from the measurement thread -- for HIFIMAN HE400i headphone owners. (This is specifically for the 2016 version, not the 2020 version.) Some reference info below ...
Specs
source: DIY-Audio-Heaven
Measurements
EQ
Specs
source: DIY-Audio-Heaven
- Driver type: orthodynamic
- Headphone connector: 2.5mm TRS (marked L and R)
- Cable entry: double-sided
- Cable: replaceable 1.5m with gold plated 3.5 mm TRS plug and 6.3 mm adapter
- Driver size: 60 mm
- Nominal power rating: 6 W
- Max S.P.L.: 130 dB (15Vrms)
- Impedance: 40 Ω
- Efficiency: 93 dB/1mW (107dB/1V)
- Weight: 370 g
- Clamping force: medium/high
Measurements
- ASR [Gras 45CA-10 measurement rig]: https://www.audiosciencereview.com/...hifiman-he400i-review-planar-headphone.18544/
- ASR [Brüel & Kjær 5128 measurement rig]: https://www.audiosciencereview.com/...-using-brüel-kjær-5128-hats.15352/post-485974
- DIY-Audio-Heaven [measurement setup]: https://diyaudioheaven.wordpress.com/headphones/measurements/hifiman/he400i/
EQ
- oratory1990
- reddit (full list): https://www.reddit.com/r/oratory1990/wiki/index/list_of_presets#wiki_full_list.3A
- PDF (HE400i): https://www.dropbox.com/s/o5jkeetgtp817wm/Hifiman HE400i (2016).pdf?dl=0
- jaakkopasanen (AutoEQ / Github): https://github.com/jaakkopasanen/Au...1990/harman_over-ear_2018/HIFIMAN HE400i 2016
- Amir's Roon filters (via @sweetchaos): https://www.audiosciencereview.com/...00i-review-planar-headphone.18544/post-606152