FitEar H1 Custom EST One can’t hear our modern

One can’t hear our modern world’s pervasive RF Noise itself

In the HD 650

that didn't utilize metal or resin wires and fit the ears of more people

For rock and pops on the other hand

FitEar H1 Custom EST One can’t hear our modernMagnesium Diaphragm Balanced Armature Driver In the H1,FitEar have adopted the Magnesium Diaphragm Balanced Armature (Mg BA) driver developed by ONKYO. The Mg BA driver, through a newly developed special surface treatment technology, achieves even higher rigidity by penetrating a ceramic layer into the magnesium material, making it the world's thinnest diaphragm for BA drivers as of December 1, 2019. This manufacturing process not only extends high