Alessandro Music Series One X 1 32 Ohm Open Air Headphones By Grado Labs

This improved version of Music Series One headphones (MS-1) by Grado offers superior design and precision normally only available on higher priced headphones. Alessandro High-End Products and Grado Labs have combined their design capabilities to create this superior line of headphones.

All Music Series headphones have a vented diaphragm design that incorporates a large air chamber. This design lowers the frequency resonance (distortion) of the diaphragm and extends bass response. A unique process to de-stress the diaphragm results in enhanced inner detail. The diaphragm is made of a low mass polymer, carefully formed to broaden resonant modes to reduce their amplitude. The diaphragm's total mass is calculated to provide a full 20 KHZ bandwidth while avoiding breakup at lower frequencies.

The Music Series One, Two and Pro headphones all feature voice-coils that are wound from ultra-high purity, long crystal (UHPLC) oxygen free copper. Ultra-high conductivity copper yields the clearest transmission and lowest coloration possible. This combined with high power neodymium magnets provide maximum efficiency giving a smoother, cleaner and more dynamic sound and a larger perceived sound stage. Hand made in the USA by Grado Labs.

• Transducer type: Dynamic
• Operating principle: Open air
  
• Frequency response: 20 - 22K Hz
• SPL lmV: 100
• Nominal impedance: 32 Ohms
• Driver match db: 0.1