koss Ktxpro1 Headphones Provide Lightweight Adjustable Portability With Great Titanium Sound. The Adjustable Headband On These Active Headphones Guarantees A Comfortable Secure Fit As You Listen At Home At Work Or Anywhere In Between.the Koss Ktxpro1s In-line Volume Control And Open Foam Ear Cushions Deliver Hear-through High Fidelity Sound The Truest Convenience In Portable Music.