The Studio version of these classic hi-fi stereo headphones uses XXL speakers with Varimotion diaphragms for higher sensitivity, a wider dynamic range, and higher sound levels. Other features include semi-open earphones, a solid bass range, clear highs, and excellent comfort. Also connects to portable equipment (CD players, DAT recorders, notebook computers, etc.)Features: 55 ohms impedance, plug-in cable Self-adjusting headband for optimu...