Power Scaling Kits

Power Scaling Kits

Power Scaling™ is London Power's proprietary methodology for achieving the same tone from "unusably loud down to unusably quiet". We invented Power Scaling. No one else offers the same dynamic range of control or versatility of performance. The original and still the best!

These kits are designed by Kevin O'Connor and supplied with the highest quality parts. 

WHICH KIT? Make sure you see our Selecting a Power Scaling Kit page.

Or begin your search here:

  • 99% of all fixed-biased amps use SV1 + RBX
  • Cathode biased amps (so-called class-A) use SV2 + VCK

If you have questions about application or installation, please email us at amps@londonpower.com, or phone 807-473-0952 from 11am-6pm, M-F EST.  Get correct advice and help right from the source.

LIC - Technology Licence (per unit)

LIC - Technology Licence (per unit)

$5.00

NOTE: Installations and constructions using London Power kits are inherently licenced, and no add.....

MOS - replacement mosfet + thermopad

MOS - replacement mosfet + thermopad

$8.00

Did you damage the mosfet in your London Power kit installation? It always saves time to follow t.....

SV-BLT - Pre-assembly of Power Scaling Kit

SV-BLT - Pre-assembly of Power Scaling Kit

$60.00

Add SV-BLT if you would like to receive your Power Scaling kit pre-assembled. This applies to: .....

PSX - Power Scale control switch

PSX - Power Scale control switch

$15.00

PSX provides an easy interface between ERK Electronic Relay Kit and multiple Power Scale controls.....

RBX - Raw Bias Auxiliary Supply Kit

RBX - Raw Bias Auxiliary Supply Kit

$49.00

The RBX provides a high-voltage low-impedance raw bias supply when one is not readily available i.....

RBX-BLT - Pre-assembly of RBX

RBX-BLT - Pre-assembly of RBX

$20.00

If you would like to receive RBX Raw Bias Auxiliary Supply pre-assembled, add RBX-BLT to your RBX.....

SV-TT - Super-Versatile 2/3rds Power Scaling Kit for Tube Amp

SV-TT - Super-Versatile 2/3rds Power Scaling Kit for Tube Amp

$74.00

SV-TT is a truly universal Power Scaling solution for 100% of guitar and bass amps. SV-TT is .....

SV1 - Super-Versatile Super-Value Power Scaling Kit for Fixed Bias

SV1 - Super-Versatile Super-Value Power Scaling Kit for Fixed Bias

$78.00

SV1 + RBX is the Power Scaling solution for 99% of guitar and bass amps. These are the kits you n.....

SV2 - Super-Versatile Super-Value Power Scaling Kit for Cathode Bias

SV2 - Super-Versatile Super-Value Power Scaling Kit for Cathode Bias

$64.00

SV2 + VCK is the Power Scaling solution for 99% of all cathode-biased amps: Your amp is: <.....

SV3 - Super-Versatile Tracking High-Voltage Regulator

SV3 - Super-Versatile Tracking High-Voltage Regulator

$54.00

The SV3 Is a Tracking High-voltage Regulator used as part of a Power Scaling solution in tube amp.....

SV84 - Super-Versatile Super-Value Power Scaling Kit for Single-Node

SV84 - Super-Versatile Super-Value Power Scaling Kit for Single-Node

$48.00

Most guitar amplifiers have separate power supply nodes for the the screen and plate of the outpu.....

TBS - Tracking Bias Supply Kit for Fixed-Bias

TBS - Tracking Bias Supply Kit for Fixed-Bias

$28.00

The TBS provides an easy installation of a tracking bias supply for fixed-biased amplifiers. The .....

TREM - Tremolo level tracker

TREM - Tremolo level tracker

$15.00

TREM provides automatic tremolo modulation depth control with Power Scale control adjustment for .....

VCK - Voltage Clamp Kit

VCK - Voltage Clamp Kit

$50.00

VCK Voltage Clamp Kit stabilises voltages in a tube preamp, helping to keep tone consistent with .....

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
amps@londonpower.com
PO Box 10012, Thunder Bay, ON P7B 6T6 CANADA