QRK-JFT - N-jfet with Gate Diode


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QRK-JFT combines an n-jfet and its gate diode on a small PCB to make series-switch wiring easy. Locate the QRK-JFT wherever the audio signal already is, and run a control wire back to the jfet control board, QRK-FET or QRK-SF.

Although QRK-JFT is ideally suited for series switching of signals up to 10V peak, it can be wired in shunt mode. Its gate diode is not required in shunt but causes no harm.


PCB size: 0.4" x 0.3" (11 x 8mm)

About London Power

London Power was founded in 1990 by Kevin O'Connor, after two decades of research into innovative audio amplification techniques. Kevin is an audio designer, author and speaker, known for his proprietary methodology called Power Scaling, and for his eleven books on audio subjects. Whether you seek amps, kits or information, you'll find useful answers here on not just the "how" but the "why" of audio amplifier design. Please enjoy the information on this site, and don't hesitate to contact us with questions.

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