64 Audio - Fourte Wired IEM

The pinnacle of in-ear monitor technology, Fourté takes advantage of everything we've learned so far in the creation of world-class in-ear monitors. Fourté offers the most accurate sound and the widest soundstage of any in-ear monitor, making it the ideal choice for audiophiles looking for a realistic sound experience. The Fourté features our complete, three-part tiaTM system, housed in an ergonomic aluminum shell with copper plated faceplates.

A new generation of in-ear monitors that challenge traditional designs in order to give you the very best listening experience possible.

Tia is a patented IEM design methodology that reduces unwanted resonance and distortion for a transparent and natural sound signature. The TIA system consists of three main components: open balance armature drivers, a single bore design, and acoustic chambers. Fourte utilizes the entire Tia System, with its four drivers radiating freely into the bore without obstruction.

Apex is a patented vent that releases air pressure in a selected ear canal while retaining IEM level isolation, allowing music enthusiasts to listen more comfortably for longer. This venting alleviates listener fatigue and allows for a much more realistic soundstage. Apex is integrated in fourte all the way down to the way the shell is milled, offering similar pressure release and isolation to our m20 module.