Microphone preamp with high pass filter

FetHead Filter is a Fethead version with a built-in 6dB/octave high pass filter with a corner frequency of 220Hz (other cutoff frequencies available on request). It is specially designed for microphones which exhibit an excessive proximity effect / low frequency response, like long motor ribbon microphones. The components which make up the filter are not directly in the signal path but are applied to the components which set the gain of FetHead Filters amplifier, thus making it frequency dependant. This way the sonic character which makes a FetHead attractive to the ear is preserved. 


Protects the microphone

Some ribbon microphones do not tolerate phantom power. FetHead's circuit uses 48v phantom power but shields it from the microphone, so the microphone is protected.


  • 6dB Oktave high-pass filter
  • Lots of headroom
  • 24-48 v phantom power
  • Low noise Class A JFet amplifier
  • 27db amplification
  • double single ended amplifier topology
  • Balanced output

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User product reviews



The higher, the better

"Will the FetHead protect my ribbon mic?"

Yes the regular FetHead and the FetHead Filter prevent the phantom power to reach the microphone. And protect your microphone.

"Which FetHead is suitable for pod-casting?"

The FetHeads are ideal for pod-casting because of there size and no need to use a extra XLR cable. The regular FetHead and FetHead Filter are for dynamic and ribbon microphones the FetHead Phantom is for condensor microphones.