Sanken has introduced the COS-11D, which overcomes RFI (radio frequency interference) from the digital transmitter. In todays wireless transmission systems the microphone must remain unaffected by new forms of digital transmitter signals. They present new challenges in the area of emission protection. In many cases, noise levels increase and the S/N ratio is deteriorated by the interference of digital transmitters. Sanken has designed the COS-11D specifically to diminish the instances where interference is an issue.Four colors are available in the COS-11D series: Black, Gray, Beige and White.Main Features:Overcomes digital transmitter RFIWater ResistantDurable DesignGreat Clear and Rich Sound4 Color ChoicesImproved Moisture ResistanceOriginal Vertical Diaphragm DesignOptimized for the Human VoiceAA battery PSU XLR-M