The new SR325e has an upgraded driver and cable design. The way the SR325e driver, cable and metal housing move air and react to sound vibrations are now less affected by transient distortions. 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 SR325e will produce a sound that is pure Grado, warm harmonic color, rich full bodied vocals, excellent dynamics and an ultra smooth top end.