Semi-open air studio headphones with clear and natural high definition sound. ● Produces rich low range, accurate midrange, and clear high range, resulting in exceptionally natural and balanced sound. Adopts AKG's proprietary "Variation Technology" with a diaphragm thickness adjustment. The around-ear type prevents fatigue even when worn for a long time. The headband is self-adjusting for a stable fit. Comes standard with velour ear pads. You can choose according to your wearing experience. Specifications Type: Semi-open air dynamic type Sensitivity (1kHz): 91dB SPL/mW Playback frequency band: 15Hz - 25kHz Maximum allowable input: 200 mW Impedance: 55Ω Ear pads type/ Material: Around ear/synthetic leather. Headphone Cable: Separate detachable 3m straight (EK 300) and 5m curl cord (EK 500 S) (mini XLR, female to mini plug) and OFC input connector stereo mini plug (gold plated). Color (Housing): Dark Navy x Black Dimensions and Weight: 7.5 x 7.9 x 4.3 inches (190 x 200 x 110 mm), 8.5 oz (240 g) (excluding cable). Accessories: Ear pads (velour) / Input conversion plug (mini plug to phone plug, screw fixed type, gold plated)構造セミオープンエアー型感度（1kHz）91dBSPL/mW,再生周波数帯域15Hz?25kHz最大許容入力200mW,インピーダンス55Ωイヤーパッドアラウンドイヤー、着脱式、合皮製,入力コネクター3.5mmステレオ・ミニプラグ（金メッキ）ケーブル着脱式、片出し,質量240g（除ケーブル）付属品ヘッドホンケーブル：3mストレート、OFC（EK300）/5mカールコード、OFC（EK500S）