JQ 4U IEM

Minimizing distortion while maximizing detail, JQ’s latest IEM delivers audio that appeals to everyone. That’s why it’s called the 4U. Handmade with meticulous attention to detail, this cutting-edge IEM features 10-millimeter dynamic drivers with beryllium diaphragms. Unlike titanium or aluminum—which can often produce an audible ringing alongside amplified music—beryllium is nearly silent. It also produces an extra octave of usable, non-resonant high frequencies beyond the audible band. Optimizing audio quality elsewhere, the 4U comes with a 5N OCC silver-plated and braided cable for reliable signal transmission. For a comfortable fit and one-of-one look, each pair of earphones is handcrafted from imported German Egger resin.