FetHead GENERAL DESCRIPTION USER GUIDE Philosophy Circuit topology FetHead is an ultra low-noise, high quality,in-line microphone preamplifier. It provides improved sound for Ribbon and Dynamic microphones. Small, compact, but, powerful, Fethead utilizes tried and true FET technology to deliver up to 27dB of clean boost. No more cranking your mic preamp and adding unwanted noise to get your microphone to an acceptable volume.