Shure 588SDX Cardioid Dynamic, High or Low Z (Plug Selectable), Locking On-Off Slide Switch Controlled low-frequency response combined with a smooth high-frequency rise for clear and intelligible voice pickup Symmetrical cardioid pickup pattern minimizes feedback Spherical grille provides effective filtering out of breath noise and popping when used for close-up vocals, and of wind noise when used outdoors Lockable ON/OFF switch Break-resistant, slip-in swivel adapter for stand-mounted use