The AH-D1000 uses a micro-fiber diaphragm so that it faithfully reproduces the sonic details and delicate reverberations that occur in concert halls and acoustically balanced studios.  Because of its superior density, audio signals are transmitted more efficiently providing improved detail and performance.  

FEATURES :    

• Microfiber diaphragm material increases sound transmission rate and quality.  
• Acoustic Optimizer technology improves dynamic bass by adjusting sound pressure balance on both sides of the diaphragm.  
• 8-37,000Hz frequency response.  
• 40mm neodymium driver.  
• Lightweight, portable design