In 1974, Koss released the HV/1A. The first dynamic headphone capable of reproducing all 10 audible octaves, the HV/1A paved a new course in personal listening. The unmatched sound, and modern dynamic speaker elements found in Koss Headphones today are a direct evolution from the legendary HV/1A.
Decilite driver elements reproduce all 10 audible octaves. Hear-thru design with acoustically open ear cushions and listening. Reticulated foam ear cushions provide hours of comfortable self-adjusting yokes. Adjustable brushed aluminum headband with self-adjusting yokes.Show Less