The pinnacle of in-ear monitor technology, Fourté takes full advantage of everything we've learned up to this point in designing world-class in-ear monitors. Fourté boasts the most accurate sound and widest soundstage of any in-ear monitor, making it the perfect choice for audiophiles seeking detailed, lifelike audio, and three-dimensional sound.
Fourté features our complete, three-part tia™ system housed in an ergonomic shell, machined from a solid piece of aluminum and finished with elegant, copper patina faceplates.
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Exclusive technologies that challenge traditional in-ear monitor designs to give you the absolute best listening experience
Tubeless In-Ear Audio (tia) is a patented IEM design methodology that aims to reduce unwanted resonance and distortion for a transparent and lifelike sound signature. The tia system is comprised of three major elements: open balanced armature tia drivers, the tia single-bore design, and tia acoustic chambers. Fourté utilizes the complete Tia system; its four drivers radiate freely into the Tia bore with no obstructions to the drivers.
Air Pressure Exchange (Apex) is a patented vent that releases air pressure in a sealed ear canal all while retaining standard IEM levels of isolation; enabling 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.