PROMISE

PROMISE is built around a specially customised DLC (diamond-like carbon) diaphragm dynamic driver — sensitive and easy to drive. Through computer simulation, the chamber geometry, acoustic design, driver magnet circuit and diaphragm were all refined and improved for a notably better sound.

The shell is machined from aluminium alloy with high-precision 5-axis CNC. The one-piece acoustic structure ensures stable, consistent sound quality, while the ergonomic in-ear shape stays light, comfortable and secure — even through long listening sessions.

The faceplate features a 3D-etched bridal portrait of Hoshimi Kaku, full of depth and texture — like a pure white promise offered to someone precious.

The tuning is balanced, with outstanding dynamics. The swappable sound nozzles let you switch between tonal styles freely — more ways to play, more ways to fall in love.