The HiFiMan RE-400 should appeal to the casual listener better than the models it replaces while holding very close to the HiFiMan sound many—myself included—have come to love.
If the $99 RE-400 earphones' design and performance were designed to please the audiophile cognoscenti, it looks like HiFiMan hit a bull's-eye.
MDR-310LP
109396
SHE3200
HP-F140
K480 NC
SC 232