Superlux HD681 EVOHD681EVOProfessional Monitoring Level HeadphonesThe best-selling model HD681 is a high quality headphone with rich bass, crystal clear high resolution and accurate sound field positioning. Now the new HD681 EVO upgraded version has a completely new, more slender shape and an improved smoother, more neutral, treble tone. The HD681 EVO easily meets the requirements of stage and studio professionals for a high-quality sound in monitoring headphones.Type: Dynamic, Semi-open Driver: ø50 mm, neodymium Sensitivity: 98 dB SPL (1mW) Frequency Response: 10-30,000 Hz Maximum Power: 300 mW Rated Impedance: 32 (copper-coated aluminum wire) Earpad: Leatherette Headphone Caliper Pressure: 3.5 N Cable: Detachable 1-meter(3.3 ft.) 3-meter (9.8 ft.) straight, single-sided; plugin cable on headphones(mini stereo connector) Connectors: Gold plated stereo mini plug Net Weight (without cable): 265 g (9.3 oz) Furnished Accessories • 1-meter straight cable • 3-meter straight cable • Cable clip • Gold-coated 3.5 mm to 6.3-mm stereo adapter • Soft carrying pouch Optional Replacement Part EPK681 EVO-L leatherette ear pad kit EPK681 EVO-V velvet ear pad kit (Includes a pair of ear pads and a pair of foam disks)New styling and more slender design, plus an improved smoother, more neutral, treble tone50 mm large-diaphragm speaker unit to reproduce accurate sound and large dynamic Semi-open acoustic design Aural design provides natural sound, able to maintain a comfortable feel during prolonged use Self-adjusting headband provides the best fit Detachable, single side cable Optional two colors: black and white