The ERGO headphones were designed from the ground up with the singular goal of creating a better sounding, more comfortable headphone. Informed by studies of the average human head proportions, the ERGO features ergonomically angled ear-cups and an optimized audio curve for continuous comfort and exceptional sound in a lightweight construction - for listeners of all shapes and sizes. From in-school testing, the home office, to plugging into your favorite portable device on the go, the ERGO will stand up to everyday usage - a first-rate headphone to keep everyone connected. USB-A connection.