All Kits & Mods

A master list of all kits, mods and building supplies from London Power

1U-13 - Single Rack Space Chassis 13" deep

1U-13 - Single Rack Space Chassis 13" deep

$130.00

Aluminum rack-mount chassis 1U tall (1.75", 44mm) and 13" deep (330mm). Textured black paint, exc.....

1U-8 - Single Rack Space Chassis 8" deep

1U-8 - Single Rack Space Chassis 8" deep

$110.00

Aluminum rack-mount chassis 1U tall (1.75", 44mm) and 8" deep (203mm). Textured black paint, exce.....

2U-13 - Two Rack Space Chassis 13" deep

2U-13 - Two Rack Space Chassis 13" deep

$160.00

Aluminum rack-mount chassis 2U tall (3.5", 88mm) and 13" deep (330mm). Textured black paint, exce.....

2U-8 - Two Rack Space Chassis 8" deep

2U-8 - Two Rack Space Chassis 8" deep

$130.00

Aluminum rack-mount chassis 2U tall (3.5", 88mm) and 8" deep (203mm). Textured black paint, excep.....

4U-13 - Four Rack Space Chassis 13" deep

4U-13 - Four Rack Space Chassis 13" deep

$210.00

Aluminum rack-mount chassis 4U tall (7", 177mm) and 13" deep (330mm). Textured black paint, excep.....

AMP-10 - 10W Tube Power Amp with Matching Power Supply

AMP-10 - 10W Tube Power Amp with Matching Power Supply

$441.00

AMP-10 is a 10W tube power amp with a matching power supply. AMP-10 is comprised of two eleme.....

PA-BLT - Pre-assembly of Power Amp

PA-BLT - Pre-assembly of Power Amp

$80.00

Add PA-BLT to your order of a power amp kit, to receive that kit pre-assembled. This applies to: .....

AMP-25 - 25W Tube Power Amp With Matching Power Supply

AMP-25 - 25W Tube Power Amp With Matching Power Supply

$467.00

AMP-25 is a 25W tube power amp with a matching power supply. AMP-25 is comprised of two eleme.....

AMP-50 - 50W Tube Power Amp With Matching Power Supply

AMP-50 - 50W Tube Power Amp With Matching Power Supply

$511.00

AMP-50 is a 50W tube power amp with a matching power supply. AMP-50 is comprised of two eleme.....

BFX-BLT - Pre-Assembly of BFX

BFX-BLT - Pre-Assembly of BFX

$40.00

Add BFX-BLT to your order for BFX to have the BFX pre-assembled. Like any kit with a tube soc.....

BFX - Best All-Tube Effects Loop Kit

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.....

3U-13 - Three Rack Space Chassis 13" deep

3U-13 - Three Rack Space Chassis 13" deep

$180.00

Aluminum rack-mount chassis 3U tall (5.25", 133mm) and 13" deep (330mm). Textured black paint, ex.....

BMK2 - Bias Mod Kit

BMK2 - Bias Mod Kit

$24.00

Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....

BMK4 - Bias Mod Kit

BMK4 - Bias Mod Kit

$35.00

Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....

BMK6 - Bias Mod Kit

BMK6 - Bias Mod Kit

$44.00

Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....

BMK8 - Bias Mod Kit

BMK8 - Bias Mod Kit

$53.00

Bias Mod Kits allow easy checking of output tube bias currents, regardless of whether those tubes.....

CARD - Circuit Card Refill

CARD - Circuit Card Refill

$7.00

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

CCK - Circuit Card Kit

CCK - Circuit Card Kit

$52.00

200 eyelets, one piece of 6" x 12" x 1/16" thick glass-epoxy card stock, hand sta.....

CH-13 - Insert Panel for 13" Deep Chassis

CH-13 - Insert Panel for 13" Deep Chassis

$50.00

This 11" (280mm) aluminum sub-chassis can be mounted inside a 13" deep (330mm) or deeper chassis,.....

CH-8 - Insert Panel for 8" Deep Chassis

CH-8 - Insert Panel for 8" Deep Chassis

$40.00

This 6" (152mm) aluminum sub-chassis can be mounted inside an 8" deep (203mm) or deeper chassis, .....

D-PRE - Mini-Marshmallow Preamp Kit

D-PRE - Mini-Marshmallow Preamp Kit

$128.00

D-PRE is based on our Mini-Marshmallow amp, which was a tribute to Howard Dumble. The basic topol.....

D-PRE-HP

D-PRE-HP

$50.00

D-PRE-HP is the "hard parts", essentially the printed circuit board and the tube sockets, plus th.....

D-PRE-PCB

D-PRE-PCB

$38.00

D-PRE-PCB is just the printed circuit board and notes for the D-PRE Mini-Marshmallow Style Tube P.....

DFC - Dual Function Controller

DFC - Dual Function Controller

$68.00

DFC - Dual Function Controller allows independent control over two functions or features in an am.....

DFC-BLT - Pre-assembly of DFC

DFC-BLT - Pre-assembly of DFC

$80.00

If you would like to receive your DFC Dual Function Controller kit pre-assembled, add DFC-BLT to .....

ERK - Electronic Relay Kit

ERK - Electronic Relay Kit

$29.00

ERK Features: A, B exclusive selection ground-referenced jfet shunt switch elements.....

EYELETS-100

EYELETS-100

$9.00

Order 100 or 1000. Bulk eyelets for your building needs. Two-hundred eyelets is typically en.....

EYELETS-1k

EYELETS-1k

$84.00

Order 100 or 1000. Bulk eyelets for your building needs. Two-hundred eyelets is typically en.....

F-PRE - Fender Style Preamp Kit

F-PRE - Fender Style Preamp Kit

$88.00

F-PRE is the classic North American style of clean preamp: two gain stages with an EQ and level c.....

F-PRE-HP

F-PRE-HP

$44.00

F-PRE-HP is the "hard parts" for an F-PRE Fender-style Tube Preamp, including the printed circuit.....

F-PRE-PCB

F-PRE-PCB

$38.00

F-PRE-PCB is the printed circuit board plus assembly notes for F-PRE Fender-style Tube Preamp. .....

FPM - 2-Channel Fender Preamp Mod

FPM - 2-Channel Fender Preamp Mod

$15.00

FPM converts the preamp channels in a vintage Fender amp to that of the LPSP London Power Standar.....

FSW - Alternate-action Foot Switch

FSW - Alternate-action Foot Switch

$18.00

FSW is a large-body push-on/push-off alternate-action foot switch with a chrome actuator. Popular.....

GMX-KIT - Transconductance Multiplier

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

GND - Ground link isolator

$15.00

GND replaces the old-fashioned ground 'lift' switch of olde with a modern automatic ground-link g.....

LINE - Dual Output Buffer Kit

LINE - Dual Output Buffer Kit

$120.00

The LINE kit is two buffer circuits with transformer-isolated outputs. These buffers can be fed f.....

LP-MV London Power Master Volume

LP-MV London Power Master Volume

$10.00

This is the best master-volume on the planet! Truly transparent. No tone change with setting. And.....

LP-PRE London Power 2-Channel Guitar Preamp Kit

LP-PRE London Power 2-Channel Guitar Preamp Kit

$128.00

LP-PRE is based on London Power's STANDARD Preamplifier presented in our book The Ultimate Tone (.....

LP-PRE-HP

LP-PRE-HP

$50.00

LP-PRE-HP is the printed circuit board, tube sockets and assembly notes for LP-PRE London Power 2.....

LP-PRE-PCB

LP-PRE-PCB

$38.00

LP-PRE-PCB is the printed circuit board and assembly notes for LP-PRE London Power 2-channel Tube.....

M-PRE - British Style Preamp Kit

M-PRE - British Style Preamp Kit

$115.00

M-PRE produces traditional British rock and metal sounds. The card allows wiring as a dual-volume.....

M-PRE-HP

M-PRE-HP

$50.00

M-PRE-HP is the "hard parts" for M-PRE British-style Tube Preamp, including the printed circuit b.....

M-PRE-PCB

M-PRE-PCB

$38.00

M-PRE-PCB is the printed circuit board and assembly notes for M-PRE British-style Tube Preamp. .....

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.....

PA66-10 - PCB + Components + 10W Transformer

PA66-10 - PCB + Components + 10W Transformer

$245.00

The London Power PA66-10 Octal Push-Pull tube power amplifier can be used with any of the common .....

PA66-25 - PCB + Components + 25W Transformer

PA66-25 - PCB + Components + 25W Transformer

$264.00

The London Power PA66-25 Octal Push-Pull tube power amplifier can be used with any of the common .....

PA66-976 - PCB + Components + LP TX976 Transformer

PA66-976 - PCB + Components + LP TX976 Transformer

$270.00

The London Power PA66-976 Octal Push-Pull tube power amplifier can be used with any of the common.....

PA66-COMP - PCB + All Passive Components

PA66-COMP - PCB + All Passive Components

$108.00

The London Power PA66-COMP Octal Push-Pull tube power amplifier can be used with any of the commo.....

PA66-HP - Octal Push-Pull Power Amp - PCB + Hard-to-Find Parts

PA66-HP - Octal Push-Pull Power Amp - PCB + Hard-to-Find Parts

$54.00

The London Power PA66-HP Octal Push-Pull tube power amplifier can be used with any of the common .....

PA66-PCB - Octal Push-Pull Power Amp - Board Only

PA66-PCB - Octal Push-Pull Power Amp - Board Only

$38.00

The London Power PA66-PCB Octal Push-Pull tube power amplifier can be used with any of the common.....

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