The SENNHEISER's HD 25 PLUS closed back audio monitoring headphones deliver high-quality audio in a lightweight, redesigned design. They can be used for a variety of purposes, including monitoring, recording, DJing, and more. The mechanical joint between the actual earcups and the headband has been upgraded, with the same technical specs and sound as the original HD 25. The joints have become more robust, allowing for easier adjustment and a better fit. The Auray UHC-725 universal headphone case is made of strong EVA plastic and is designed to protect studio headphones from bumps and impacts during transport. The case has a soft nylon interior and a robust nylon shell that resists tears and abrasions. It fits most studio headphones.