Semi-open-air studio headphones that deliver the sound quality professionals demand at a great cost-performance ratio. Equipped with the unique "XXL Transducer" developed for professional models, the diaphragm uses a "Two-Layer Diaphragm" structure that combines two types of material and "Varimotion Technology" that changes the thickness between the center and outer edge. Each and every sound is carefully rendered, accurately reproducing even the most subtle reverberations. - The carefully designed semi-open air structure delivers an extremely clear, natural sound. It outputs rich, tight low frequencies and transparent mid-to-high frequencies, and also realistically reproduces sound positioning and depth. - The ear cups can be freely moved up, down, left and right, and the thick ear pads evenly distribute pressure on the sides of the head. Maintains a comfortable fit even during long-term monitoring. - The ear pads are an around-ear type that completely covers the entire ear, reducing strain on the ears. - The headband is wide and provides an excellent fit, and also features a self-adjusting function that allows you to adjust the length just by putting it on. - The cable and ear pads, which are prone to damage, can be easily replaced. [AKG headphones' unique technology] ■Varimotion Technology: A technology that appropriately controls the movement of the diaphragm by changing the thickness of the diaphragm at the center and outer edge. The thick central "SOUND ZONE" suppresses the split vibrations that cause distortion, resulting in extremely clear high frequencies. In addition, the thin outer edge of the "MOVEMENT ZONE" supports the smooth movement of the "SOUND ZONE" when high frequencies are output. When outputting low frequencies, it works together with the ``SOUND ZONE'' to act like a large diaphragm, producing powerful sound. ■TWO-LAYER diaphragm A diaphragm made by combining and bonding together thin films made from two materials with different vibration damping characteristics. It has high damping (braking) performance, and attenuates unnecessary vibrations that cannot be completely eliminated by ordinary diaphragms. Delivers clear and crisp mid-to-high range reproduction. ■Specifications Structure: Semi-open air Sensitivity (1kHz): 91dB SPL/mW Frequency response: 15Hz to 25kHz Maximum allowable input: 200mW Impedance 55Ω Detachable around-ear ear pads, synthetic leather Input connector 3.5mm stereo mini plug (gold plated) Cable: Detachable, single-sided, weight: 230g (excluding cable) Accessories: EK300 (headphone cable (3m straight, OFC)), Standard plug adapter (screw type, gold plated)