The Beta87C premium vocal microphone delivers studio-grade performance and a smooth, extended high-end frequency response in a cardioid condenser design. The microphone adds warmth to the frequency response and creates an ideal environment for in ear personal monitoring. And its highly consistent cardioid pattern offers excellent rear rejection.
Transducer Type : Condenser
Polar Pattern: Cardioid
Frequency Response from: 50 Hz
Frequency Response to: 20 KHz
Sensitivity (dBV/Pa): -51,5 dBV/Pa
Sensitivity (mV/Pa): 2,7 mV/Pa
Equivalent Selfnoise: 22 dB(A)
Sound Pressure: 139 dB
Weight: 207 g
Since it has cardioid design, it will be able to pick up a wider field of audio than super cardioid, so you will find more ambiance present in your IEM mix, which is why many vocalist prefer this one than the other model. In the output, if you compare this with 87A, the sound will be noticeably lower and you will need to increase the gain in your mixing board.(Good for studio recording)