"Battery health is different than battery life. Battery life determines how long your battery lasts on a single charge, but your battery health determines how much your battery life diminishes over time."
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In 1958, John C. Koss invented personal listening with the World’s First SP/3 Stereophone. Koss sought to replicate the excitement of a live musical performance and the original SP/3 stereophone al... more
In 1958, John C. Koss invented personal listening with the world’s first SP/3 Stereophone. Koss sought to replicate the excitement of a live musical performance and teamed up with engineer Martin L... more
Explore the wide range of clear and transparent headphones from Koss in both Over ear and On ear including KPH30i Clear, Porta Pro Utility, CL/80, CL-20, CL-5 and CL-2. Shop Now more