The HE400i are a full-size planar magnetic headphones intended for high performance listening at home of in the studio, these are the new and improved replacement for the HE-400.  HIFIMAN did an impressive job upgrading the HE400i, the build quality and the design is much better than the older model, a new headband is same … Continue reading HIFIMAN HE-400i Planar Magnetic Headphones Preview