The King of Headphones:) 
Price - $4,000 when new
Technical Details
    * Type: Over-ear
    * Open ear: No
    * Headband: Over-head, self-adjusting
    * Diaphragm: 50 mm
    * Includes .25-inch adapter: No
    * Cord length: Information not available
    * Cord type: Single/dual-ear
    * Nominal impedance: 400 ohms
    * Sensitivity: 100 dB/mW
    * Frequency response: 20 to 20,000 Hz
    * Batteries: No
    * Item weight: 14 ounces, without cord set
    * In the box: Headphones, a hard carry case, a wiping cloth, earphone/headphone cleaning tissue, contact cleaning tissue, and a user's manual
 Product Features
    * Ultimate-quality construction, comfort, and sound
    * Large, 50 mm, ultra-thin, bio-cellulose dome diaphragms for sparkling clear treble and rich bass notes
    * Real-wood housing made from mature keyaki (or zelkova), a Japanese tree
    * Greek lambskin covers the earpads, headband, and suspender; magnesium hangers reduce resonance
    * Cord made from 99.999 percent pure linear-crystal oxygen-free copper; headphones come with a specially treated storage case
Sony MDR R10
 
  
  
  
  
  
 