“ Prior to purchasing these, my primary concern is to have a proper alternative for my ESW9 which have better isolation to be used for listening to my ballad tunes on the road. While I don't have any issues with louder tracks, with more subtle ones, my ESW9 aren't up to the task, and so my search began. Actually, I'm not really keen on the idea of using an IEM since they irritate my ears...” --lotusbloom
“ This "moving armature" descendant of the Ortofon e-Q7 makes no sacrifices in terms of quality, despite being introduced at a more affordable price point. The introduction of a new cord and strain relief system help tame microphonics and make the model easy to wear both down and over the ear. The all-aluminum housing is large and may not fit all ears, but the design is simple and...” --Dekimasu
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...