“Astell & Kern AKR01 Jimmy Moon at Astell & Kern was kind enough to lend me a pair of AKR01's for review. Big thanks to him. Anyways, review ahead! What are they: I notice that I haven't seen coverage for these at all, and I wanted to tell you what they are about. The AKR01 is based off the Final Audio Heaven IV design, and is voiced to work well with...” --wolfetan44
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...