REV-HP - LP-Style Reverb Loop: PCB + Hard-to-find Parts only


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This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recovery amplifier. The output of the loop is high-impedance and should feed into a tube grid, such as the LINE buffer. Reverb sound is cleaner than the usual SE drive, making it a better match to distorted sounds.

Use with a standard long or short delay line with 8-10 ohms input impedance and 2-4k output impedance (output DC resistance is 160-200 ohms for the tank).

Power requirements: 12V-300mA; 320V - 10mA

REV-HP includes instructions, tube sockets, custom London Power reverb drive transformer and the PCB The other components and the reverb tank are not included.

Kit requires assembly.

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

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

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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