Professional IEM Earphones: CA1 HiFi wired earbuds, the in ear monitor headphones provide pure natural and detailed sound for musician singer drummer and audiophile, able to act as professional recording headphone & in-ear audio monitors in studio. Patented Technology: With EarBass patented technology (Dynamic low frequency diaphragm driver unit), CA1 cored IEM ear phones provide deeper bass with low frequency extension. Besides, equipped with triple driver unit (2 dynamic driver unit +1 balanced armature unit), CA1 in ear monitors ear buds has enough power to perform precise details of sound.