The Beyerdynamic DT 990 PRO are open-back, circumaural studio headphones designed for professional monitoring and critical listening, featuring a 5–35,000 Hz frequency response and 96 dB nominal sound pressure level. They are renowned for their durable German construction, comfortable velour earpads, and detailed, spatial sound. Available in 80 Ohm and 250 Ohm versions, they feature a 3m coiled cable