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 40 model features a titanium element for impressive bass and treble clarity, closed ear cushions for deep bass and maximum isolation as well as a collapsible headband design for portability and protective storage.