Bullet points AH-D1001 • Microfiber diaphragm Microfiber has been used to form the diaphragm so that it faithfully reproduces the sonic details and delicate reverberations that occur in concert halls. • Acoustic optimiser Optimum acoustics characteristics are achieved by adjusting the sound pressure balance in front of and behind the diaphragm. Acoustic Optimiser • L/R equal cable connection High-quality OFC cables of equal length for the L/R channels are used to maintain optimum sound quality. • Includes extension cable A 1.5-meter cable is provided for use when enjoy- ing music with high-quality sound from a digital audio player carried in a pocket, and an extension cable of 3.5 meters is also provided for when the headphones are used at home. Accessories AH-D1001 1.7m extension cable ø 6.3 mm stereo plug adapter Carrying pouch