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...
Primary Information Audio System Type Headphone Headphones Audio Output / Connectivity Technology Wired Response Bandwidth (Headphone)(Hz) 20 - 20000 Sound Output Mode Stereo The TDK Life on Record In-Ear Headphones with iPod/iPhone Control elevate the personal listening experience delivering the ultimate in comfort and control, superior craftsmanship and high fidelity.