Voiced to deliver the realistic, flat frequency response that musicprofessionals insist on, AKG® K 520 semi-open headphones are true hi-fi performers, reproducing your favourite music the way your favourite musicians intended for it to be heard. And with an all-new headband design, they’ll fit comfortably for hours of continuous listening. The K 520s are lightweight and fold flat for easy transport, so they make it easy to enjoy realistic hi-fi sound anywhere.