Four custom-engineered drivers tailored to blend precisely with each other deliver extended high-end clarity, while the groundbreaking low-pass filter design gives you the performance of a true subwoofer — all without sacrificing a solitary detail. Customize your audio even further with a selection of four unique sound signagtures, including a new "extended" option. This is unparalleled aural acuity based on decades of dedication. It’s why more musicians trust Shure and true audiophiles fall in love. Detachable 3.5 mm communication cable is compatible with Apple and Android, and enables integration of other accessory options - including wireless connectivity. Sophisticated listening for the refined ear.