CARD - Circuit Card Refill


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6" x 12" x 1/16" thick glass-epoxy card stock. Rigid material - can be cut to size by the user.

A single card provides enough material to build a conventional amp (e.g., Plexi, Deluxe, etc.). Two cards are required to build the Standard Amp project from our book, The Ultimate Tone, Vol. 5 (TUT5).

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.

Contact Us

(807) 473-0952
11 am - 6 pm, M-F
PO Box 10012, Thunder Bay, ON P7B 6T6 CANADA