The black R100 Stereo Headphones from Resident Audio feature 40mm full-range drivers that deliver a frequency response of 20 Hz to 20 kHz. The lightweight headphones have an adjustable headband and a closed-back design, and can be used to provide a comfortable listening experience in applications for studios, voice-overs, and more. The headphone cable terminates with a 1/8" mini-jack connector and a 1/8" to 1/4" adapter is included.