“ Tested on various classical and jazz pieces, found the SD3 to give commanding performance on all. Note, I used high quality flac versions of all songs tested. SD3's are about two days old and have about 8 hours on them, hardly broken in. They were bought from this shop and imported into the states at the regular retail price. Eartips used were Sony hybrids, peach inner...” --Carlsan
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...