Thanks to the 10 mm CCAW double cavity drivers and the EBT diaphragm, the KC06A puts out some serious power. Delivering an overall warmer and richer sound than its forebear, the bass has more weight and control, the mids stay shining while gaining a bit more balance, and the treble has been smoothed out to avoid any sibilant splashes. To complete the aural picture, the instrument separation brings new sections to life and the soundstage is wider than almost any inner earphone we’ve tried.