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64 Audio tia Fourté is a first-of-its-kind universal-fit earphone that takes full advantage of the patent-pending tia system and everything that 64 Audio has learned up to this point in designing world-class in-ear monitors. The earphones are machined out of a solid piece of aluminium for a durable yet elegant look with beautiful copper patina finish inlayed on the faceplates. Inside, proprietary tia open balanced armatures are expertly arranged to deliver rich, natural sound in a brand new way.
Featuring groundbreaking technology such as frequency-shaping acoustic chambers in combination with an internal passive radiator that helps to craft a visceral low end, smooth mids, and a luscious 3D soundstage. Get ready to hear detailed highs as you've never experienced before thanks to a custom open balanced armature tia high driver. 64 Audio broke all the rules and started from scratch to come up with the tia Fourté and still managed to fit this groundbreaking technology into a shell that's smaller and more ergonomic than their Universal-Fit 12 driver model.
The tia Fourté features the innovative apex technology. Apex (air pressure exchange) relieves air pressure caused by miniature speakers in a sealed ear canal, giving you a superior listening experience that simply cannot be achieved by traditional IEMs.
Welcome to the pinnacle of IEM design.
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