F-PRE - Fender-Style Preamp Kit


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F-PRE is the classic North American style of clean preamp: two gain stages with an EQ and level control in between. The sound of Fender amps, surf music, classic warm clean sound with sweet sustain. The magic of a single 12A_7. This is the standard Fender circuit, used in their entire line after about 1963.

Combine F-PRE with M-PRE and/or Z-PRE and a switching system (ERK or QRK) to have a multi-voice preamp.

• Volume
• Bass
• Mid
• Treble

On-board muting points are provided for switching between F-PRE and other preamp channels in a multi-channel system. Each gain stage is decoupled for very-low-noise operation.

Power requirements:
Heater: 12V at 150mA or 6V at 300mA, AC or DC

Plate: 160 to 450Vdc at 2mA
Use our Power Supply Kit for Tube Preamp PSU-PRE, or similar, to build a stand-alone preamp.
Combine with AMP-10 or AMP-25 to build an integrated amp.

This item includes PCB, tube socket and components, and helpful installation notes including layout and schematic diagrams of the kit.

Would you like to receive this kit pre-assembled? Add PRE1-BLT to your order.

Kit requires assembly.
Components may be mounted on either side of the board to facilitate internal or external tube access when mounted in a chassis. Extensive filtering assures very low noise with classic tone.

For more info on London Power Preamp Kits, see our Selecting a Preamp Kit page.

Need a chassis for your preamp project? See our Rack-Mount Chassis page, or browse under Building Supplies

PCB size: 3.75" x 1.5" (89mm x 38mm)


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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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