All New Philips Shp9600 With The Perfect Blend Of Performance, Comfort, And Quality Open-Back Design With Spacious Sound. Ideal For Listening To Your Favorite Music Everyday At Home Perfectly Tuned 50 Mm Drivers Deliver Crisp Bass, Balanced Midrange, And Prstine High Frequencies. The Drivers Are Engineered To Fit The Ear'S Natural Geometry, Ensure No Detail Is Lost.