Sennheiser MKH 8020 ST Stereo Set Pair of MKH 8020 Small Diaphragm OmniDdirectional MicrophonesThe omni directional MKH 8020 is ideal for recording large and small sound sources, for a "Decca Tree" or for use in an OSS "Jecklin Disk" array. As it does not suffer from a proximity effect, it is also a good choice for close miking. If the acoustic ambiance is right, this microphone will provide very impressive recordings. The extra octave at the bottom end makes the MKH 8020 perfect for recording pipe organs, grand piano and acoustic double bass.