The CAD Sessions 100 Drummers Isolation Over-Ear Headphones are high output stereo isolation headphones with extended bass frequency response. They are equipped with 50mm neodymium drivers for exceptional detail and clarity. It enables the musician to monitor music or a click track during a recording session or live performance with superior clarity while attenuating ambient noise by 19dB. The DH100 is an essential tool for enhanced performance, rehearsal and recording. One metre cord with 1/4” and 1/8” connectors included. Specifications Frequency response: 10Hz -20KHz Sensitivity: 105dB @ 1mW Maximum power rating: 500mW Ambient noise reduction: 19dB Driver: 50mm Neodymium Cable length: 1m [39.4”] cord Connectors: 1/4” and 1/8” connectors RoHS: Compliant