The K872 Master Reference Closed-Back Over-Ear Headphones from AKG feature custom 53mm drivers with 1.5 Tesla magnet systems that deliver precise imaging, deep low frequencies, and extended dynamic range. The optimized closed-back design ensures isolation during tracking, mixing and mastering sessions. The open-mesh headband and 3D-shaped slow-retention foam earcups create a personalized fit for good comfort during long sessions.