Our selection of Amp Mod kits is a tinkerer's delight! Covers master volumes, bias mods, Quiet Supplies, GmX to make your amp sound huge, 2-channel mod for vintage Fenders, and much more.
Designed by Kevin O'Connor and supplied with the highest quality parts.
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.
BFX - Best All-Tube Effects Loop Kit
$98.00
BFX can be incorporated into any tube amp, providing a tube solution to active effects loop requi.....
BFX-BLT - Pre-assembly of BFX
$40.00
Add BFX-BLT to your order for BFX - Best All-Tube Effects Loop Kit to have the BFX pre-assembled......
BMK2 - Bias Mod Kit for 2 Tubes
$24.00
Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....
BMK4 - Bias Mod Kit for 4 Tubes
$35.00
Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....
BMK6 - Bias Mod Kit for 6 Tubes
$44.00
Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....
BMK8 - Bias Mod Kit for 8 Tubes
$53.00
Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....
FPM - 2-Channel Fender Preamp Mod
$15.00
FPM converts the preamp channels in a vintage Fender amp to those of the "LPSP" London Power Stan.....
GMX-KIT - Transconductance Multiplier
$89.00
The "GmX" effect is the difference of sound between a 50W amp with two power tubes and a 100W amp.....
GND - Ground Link Isolator
$15.00
GND replaces the old-fashioned ground 'lift' switch "of old" with a modern automatic ground-link .....
LIC - Technology Licence (per unit, for commercial builders and installers)
$5.00
NOTE: Installations and constructions using London Power kits are inherently licenced, and no add.....
LP-MV - London Power Master Volume
$10.00
We don't normally brag, but this is the best master volume on the planet! Truly transparent. No t.....
QS-HV - Quiet Supply for High-Voltage Tube Amps
$52.00
The QS-HV provides a large reduction of supply-borne noise and hum - typically 60dB from 50Hz to .....
QS-LV - Quiet Supply for Low-Voltage Tube Amps
$49.00
The QS-LV provides a large reduction of supply-borne noise and hum - typically 60dB from 50Hz to .....
REV-HP - LP-Style Reverb Loop: PCB + Hard-to-find Parts only
$92.00
This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....
REV-PCB - LP-Style Reverb Loop: PCB only
$38.00
This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....
SEM - Single-Ended Mod
$10.00
The SEM allows the tone of a single-ended amp to be produced by any push-pull fixed-bias or catho.....
SL-MV - Splitter Limit Master Volume
$19.00
Techs and amp designers have used various methods to control the gain of the Schmitt splitter as .....
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 .....
TX316 - Push-Pull Reverb Driver Transformer
$48.00
Hobbyists and amp builders can now use the same high-quality transformers and chokes found in Lon.....
VCK - Voltage Clamp Kit
$50.00
VCK Voltage Clamp Kit stabilises voltages in a tube preamp, helping to keep tone consistent with .....
VCK-HV - High-Voltage Clamp Kit
$65.00
VCK-HV stabilises the supply voltage against variations of incoming voltage. using an active regu.....
VCK-BLT - Pre-assembly of VCK
$40.00
Add VCK-BLT to your VCK order if you would like to receive this kit pre-assembled. The assemb.....
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