The Bock Audio IFET is a dual FET amplifier cardioid microphone powered by P48 phantom voltage. Audio output is fully transformer balanced.
The iFet is a phantom powered FET condenser mic designed to capture the high SPL handling and sound of the classic fet47. The unique sonic signature of this mic is not easily replaced by modern microphone alternatives. To increase the value and versatility of the iFet, Bock added a second set of FET electronics for a second "sound", accessed via a switch.