The 64 AUDIO U12 Universal-Fit earphones with patent-pending tia™ technology provide the ultimate personal listening experience for audio professionals and the most discerning audiophiles. Incorporating the tia single-bore with 4 low drivers, 6 mid drivers, and the incredibly smooth tia high and high-mid drivers improves the already lively and three-dimensional soundstage. The tia high-driver, located just inside the sound stem, completes the highs with a clean, smooth, and beautifully extended top-end. Lower-mids were masterfully refined while the low-frequency response remains intact, providing the familiar, warm and engaging sound of the U12. A protective mesh covering the sound port resists debris while the patent-pending apex™ module technology allows for customizing the sound signature and reduces air pressure inside the ear canal for fatigue-free listening. All of this technology is housed in an ergonomic aluminum shell for unmatched durability and beauty with a gorgeous brushed aluminum faceplate. The U12 with tia technology stands head and shoulders above the competition, offering a far superior listening experience with an immersive sound and impeccable spatial imaging.