64 Audio APEX Modules

Apex is a patented vent that releases air pressure in a sealed ear canal all while retaining standard IEM levels of isolation; enabling musicians and music enthusiasts to listen more comfortably for longer. This venting alleviates listener fatigue and allows for a much more realistic soundstage. Apex also allows you to tune the earphone to your preference – the higher isolation modules preserve more bass, while the lower isolation modules reduce it.