The CR-8L Cardioid Lavalier Microphone is a miniature microphone designed with a tight pick-up pattern to address feedback concerns. The microphone has an extremely small format of a mere 4mm in diameter, and a surprising capability to handle up to 135 dB max SPL. The CR-8L cardioid lavalier microphone is one of the best choices for amplification in high volume situations where gain before feedback is a problem. The results you get from the miniature size of this cardioid lavalier are more than you would expect! Small Mic with a Big Sound The CR-8L lavalier microphone has an extremely small format of a mere 4mm in diameter, and a surprising capability to handle up to 135 dB max SPL.