The C414 XL II/ST stereo condenser microphone matched pair bundle contains two C414 XL IIs that have been selected from thousands of individual microphones and hand tested to for sensitivity characteristics that lie within 1dB of one another throughout the range of 300Hz to 8kHz in cardioid mode. They come with a full accessory kit that includes a pair of shock mounts, a stereo bar, two foam windscreens, and hardshell carrying case. This package was purchased new from Sweetwater and never used.