New advances in materials and design have served to expand the performance of Koss products. The company's product development team and engineers look for the most innovative combinations of existing and new technologies to deliver the most exciting products possible.A home headphone is a headphone that is primarily used in the home, with home electronics. Generally speaking, home headphones are somewhat larger and more isolating.Koss UR 18 model features a dynamic element for extended frequency response, closed leatherette ear cushions for maximum isolation and deep bass as well as a collapsible design for protective storage and maximum portability when listening on the go.