Shure SM57 VIP Presidential Microphone Kit Dual Microphone Kit Complete with Cables & Windscreens The SM57 VIP kit includes: 2 - SM57 unidirectional dynamic microphones, 1 - custom horizontal dual microphone holder with shock mounts, 1 - A26M vertical dual microphone holder, 2 - A26X 3-inch black extension tubes, 2 - A2WS foam windscreens, 2 - A81WS foam windscreens, 1 - A13HDB black mounting flange, and 2 - 10-foot microphone cables with black XLR connector Frequency Response: 40 to 15,000 Hz Polar Pattern: Unidirectional (cardioid), rotationally symmetrical about microphone axis, uniform with frequency Rated impedance is 150 ohms (310 ohms actual) for connection to microphone inputs rated low impedance