General Design Commentary on Grado Headphones
All Grado headphones have a vented diaphragm design that incorporates a large air chamber. This design concept lowers the frequency resonance (distortion) of the diaphragm and extends bass response. The diaphragm is made of a low mass polymer, carefully formed to broaden resonant modes to reduce their amplitude. The diaphragm mass is determined with the compliance of the suspension in mind so that the desired low frequency resonance is achieved. The diaphragm's total mass is calculated to provide a full 20 KHZ bandwidth, while avoiding break-up at lower frequencies. Technical refinements for Grado drivers include improved diaphragm and voice coil design for increased bass response and a larger perceived sound stage. A unique process to "de-stress" the diaphragm results in enhanced inner detail. An increased ability to control driver resonance virtually eliminates distortion. For all models, an improved headband spring will afford greater comfort for the majority of listeners.

The Sonic Reproduction of Grado Headphones
Grado headphones can reproduce as natural a soundstage from stereo recordings and provide as much listening pleasure as a good pair of speakers do. Grado headphones are free of room effects and placement problems, and they minimize any interference from external noise. They also offer portability and the ability to listen without worrying about the neighbors. With Grado headphones, you will hear recordings with greater clarity and with deeper bass than others! Grado headphones are the antithesis of mass production, as each Grado headphone is hand-assembled and closely scrutinized to meet full performance specifications in the U.S.A.

Grado Prestige Headphone Series Details
The Professional, Statement, Reference Series and along with the Prestige Series SR325is, SR225i and SR125i feature voice-coils that are wound from ultra-high purity, long crystal (UHPLC) oxygen free copper. The copper is slowly drawn through the die in extremely small increments and is annealed following each drawing operation. Ultra-high conductivity copper yields the clearest transmission and lowest coloration possible. The sound of UHPLC copper is smoother, cleaner and more dynamic. All use very high power neodymium magnets to provide maximum efficiency and better sound. Each headphone driver is made to Grado's high standards, then pair-matched for exact imaging. These headphones also utilize UHPLC copper in the connecting cable.

The Latest Version, the SR125i
What does the i stand for in the new SR125i from Grado? Improved, that’s what! Grado's ability to combine lightness with extreme rigidity and internal damping has been put to good use on the SR125i. Based on the same design as theSR80i, the SR125i also features an improved driver and cable design utilizing UHPLC (Ultra-high purity, long crystal) copper voice coil wire. With the new 8 conductor cable design you will notice improved control and stability of the upper and lower range of the frequency spectrum, with both better supporting Grado’s world renowned midrange. The Diaphragms are put through a special 'de-stressing' process in order to enhance inner detail. The way the SR125i’s new driver, cable and plastic housing move air and react to sound vibrations are now less affected by transient distortions. Bass, midrange and treble are all more open and you will enjoy the fine tonal spread and balance.

Comments on the Grado SR125

"We all agreed the Grado SR125 headphones are excellent, and that they would be a fine choice for anyone looking first to audio quality" -By Paul Bergman / Ultra High Fidelity Magazine (Canada)

Winner of " Critics Choice" -Award presented by SOUND & VISION

"Analytical listening was helped by the well-defined locations of individual instruments and voices. If headphones can be as musically satisfying as this, they must be pretty good." -Gramophone

"Still, in its own realm the Grado SR125 is a real winner and an excellent value. I cannot imagine a better sounding headphone at anywhere near its price." - Julian Hirsch - Stereo Review Vol.60, No.5

"It was obvious to me that the members were very impressed by the Grado SR125 headphones." -Edward Long- Audio Magazine Vol.79, No.8

"Nearly every headphone-using colleague I spoke to in the USA keeps either SR60, SR80, or SR125s handy for reviewing." - Ken Kessler - HiFi News & Record Review

"simultaneously musical and revealing of every nuance recorded" -Robert J. Reina- Stereophile

Goodcans.com Review of the Grado SR125 Headphones

Pennystarsys.com Review of the Grado SR125 Headphones

Cnet.com Review of the Grado SR125 Headphones

Sterophile Review of the Grado SR125 Headphones