Amplified audiocoils combine a magnetic-field sensing coil with an integral low-power preamplifier. This design produces Unit Sensitivity 20-25 dB greater than comparable passive audiocoils.
Under typical conditions, output attributes are comparable to electret microphones. In hearing-aid applications, this allows switching between microphone and audiocoil signals with minimal change in acoustic output and without need for a separate preamplifier.
Our new PC5-Series amplified audiocoil is the newest addition to the Global Coils family of products. It supercedes our now discontinued PA3 and PC3 series as the world's smallest amplified coil, now with the best EMI Protection available.
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