Formal on the outside, fun on the inside Made with hand-assembled, sustainable materials, the Apos Caspian is an open-back headphone that looks timeless and sounds thrilling. The sound We designed the Caspian to make you smile-not to be used as a microscope for analyzing every last detail. The bass is playful yet controlled, alive and extended with visceral rumble. The midrange is compelling, with a focus on realism and immersion. For the high-end, we wanted all the airiness and sparkle of a qua