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...
Inspired by the sonic clarity and detail of our legendary electrostatic speakers, the Mikros™ 70 reference in-ear headphones deliver the realism, richness, and purity of sound that MartinLogan's discerning customers have come to expect. With superb ambient noise isolation, listening through the Mikros 70 is like having your own private MartinLogan listening room wherever you go.