M-PRE - British Style Preamp Kit


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M-PRE produces traditional British rock and metal sounds. The card allows wiring as a dual-volume preamp capturing the plexi vibe, or as a master-volume Marshall 800-style preamp for 1970s-era distortion. A modern update of these circuits allows much more dynamic tone control. Two 12A_7s allow tonal diversity. Local supply decoupling is included.

Use M-PRE as the distortion channel along with our F-PRE as a clean channel for the highly sought after Fender-clean plus Marshall-crunch tone combo. Modern shredders can use M-PRE as the rhythm channel combined with our Z-PRE as the lead channel.

• Level-A / Gain
• Level-B / Volume
• Treble
• Mid
• Bass

Power requirements: 12V-300mA; 320V-4mA

Use PSU-PRE or similar to build a stand-alone preamp.
Combine with AMP-10 or AMP-25 to build an integrated amp.

M-PRE kit

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

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: 6.5" x 1.5" (165mm 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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