The 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. Specifications: * 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) What’s in the box: 1 x Headphone, 1 x 1-meter straight cable, 1 x 3-meter straight cable, 1 x Cable clip, 1 x Gold-coated 3.5 mm to 6.3-mm stereo adapter, 1 x Soft carrying pouch.