The M1250B condenser microphone has a fully integrated preamp and detachable cable providing immunity from RF interference caused by cell phones and GSM devices. The M1250B is designed to mic acoustic instruments, overhead stages, podiums, conferences and presentations. In situations where the volume is loud on stage or there are many open microphones, this pattern is helpful in further isolating the instrument or vocal from the rest of the instruments on stage. The microphone can be worked at ½ the distance of cardioid if necessary.