KZ SymphonyExperience an extraordinary auditory journey with the KZ Symphony, meticulously engineered for professional musicians who demand unparalleled sound quality on stage and in the studio. By seamlessly combining a 13. 2mm self developed planar driver with a 6mm high performance dynamic driver, the KZ Symphony delivers a rich, expansive soundstage that traditional earphones simply cannot achieve. Revolutionary Hybrid Technology Planar and Dynamic Drivers