Beyerdynamic DT 770 Pro Closed-back Studio Headphone provide professional-quality sound for critical listening applications. Whether you’re in the control room or on the recording floor, these DT 770 Pro ‘phones are made to deliver accurate sound while giving you a very comfortable fit – a real necessity for long sessions. You get an impressive 5Hz-35kHz frequency response, while the closed-ear design helps to minimize outside noise and orient the headphones’ speakers to your ears correctly.