Master Series by Sound Professionals - New! Ultra low noise In-Ear Binaural microphones - Black cables - Made in USA - Item #11846 Flat frequency response Extremely low noise for the quietest recordings (75dB signal to noise ratio) Very high sensitivity -32dB High maximum sound pressure level (SPL): 115dB with normal "plug-in-power" and 130dB with one of our power modules Produces extremely realistic recordings