The 4.Ai, a hand crafted In Ear Monitor (IEM) utilizing the same internal design and components in the 4.A Custom In Ear Monitors (CIEM). The 4.Ai requires the same painstaking hand craftsmanship that all Heir Audio CIEMs require. The 4.Ai offers all the advantages of an IEM, built with the same exacting standards of all Heir Audio products. The 4.Ai, like its cousin the 4.A, offers a clean...
Revolutionary bass and high-fashion colors combine to form a new fashion attitude. Deep Bass with unique Soft Silicon earbud naturally reduces outside noise and enables unparalleled bass levels that can actually be felt. Complete comfort is assured through unique shape soft silicon earphone cover.