The Astatic 920B is a superior low noise, electretcondenser cardioid mini-gooseneck microphone.The 920B microphones have a wide, flat frequencyresponse which provides unsurpassed, natural, transparent sound quality, and warm sound when used close to the sound source. Their cardioid pickuppattern minimizes annoying feedback when used close to sound reinforcement speakers and monitors, while reducing the pickup of unwanted off axis sounds. The920B is 20 inches in length.