64 Audio U4s Hybrid 4-Driver In-Ear Monitors

The 64 Audio U4s is a game-changing hybrid 4-driver in-ear monitor, delivering professional-grade performance, musical versatility, and unmatched clarity. Featuring one dynamic driver and three balanced armatures, the U4s offers a wide and immersive soundstage with deep bass, smooth mids, and precise highs — ideal for studio work, stage performance, and high-end personal listening. Built with 64 Audio’s industry-leading technologies, the U4s incorporates tia™ (tubeless in-ear audio) technology, LID™ (Linear Impedance Design), and Apex™ modules, ensuring a consistent sound signature across all sources while reducing ear fatigue and enhancing long-term comfort. With its customizable Apex modules, you can tailor the isolation level and bass response to your preference, making the U4s a true chameleon for any musical environment. Whether you’re mixing, monitoring, or just enjoying your favorite albums, this monitor delivers the accuracy and musicality trusted by professionals worldwide. Housed in a durable aluminum shell with a sleek, anodized finish, the U4s combines rugged reliability with modern design. The detachable premium cable and ergonomic universal fit ensure all-day comfort and adaptability for any scenario. Key Features: Quad-driver hybrid design: 1 dynamic 3 balanced armatures tia™ high-frequency driver for extended treble clarity Apex™ isolation modules to reduce ear fatigue LID™ for consistent tuning across devices Durable, anodized aluminum housing Detachable cable and ergonomic universal fit With the 64 Audio U4s, precision meets personalization — a true powerhouse IEM built for serious audio professionals and demanding music lovers.