The ST4011A Stereo Pair with 4011A Cardioid Microphones from DPA is kit that includes two 4011A Microphones, two microphone holders, two windscreens, and a foam-lined Peli carrying case. The microphones are matched within ±1 dB on both frequency response and sensitivity, providing accurate sonic reproduction from both mics. The 4011A’s are designed to be used for close placement applications, such as near the hammers of a piano, or as drum overheads.