All Books, Kits & Mods

Master list of all London Power / Power Press Publishing books, kits, mods and downloads.

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.....

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.....

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.....

AL20 - Class-A Baby Leach Amp Design

AL20 - Class-A Baby Leach Amp Design

$4.00

AL20 is a pure class-A "Baby" Leach solid-state power amp. 20W pure class-A complem.....

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

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

$516.00

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

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

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

$564.00

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

$664.00

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

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.....

BFX-BLT - Pre-assembly of BFX

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......

BFX-HP - PCB + Tube Socket only

BFX-HP - PCB + Tube Socket only

$42.00

BFX-HP is the PCB plus tube socket for the BFX - Best All-tube Effects Loop. .....

BFX-PCB - PCB only

BFX-PCB - PCB only

$38.00

BFX is the Best All-Tube Effects Loop, and BFX-PCB is the printed circuit board and kit notes for.....

BL20 - "Baby" Leach Power Amp Design

BL20 - "Baby" Leach Power Amp Design

$4.00

BL20 is the "Baby" Leach amp. Where most similar designs are aimed at 100W+, BL20 is targeted for.....

BLQE - "Baby" Leach w/ Quad-Comp EF Output Design

BLQE - "Baby" Leach w/ Quad-Comp EF Output Design

$4.00

BLQE is the "Baby" Leach power amp with a Bryston-style Quad-Complementary output stage wired for.....

BMK2 - Bias Mod Kit for 2 Tubes

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

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

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

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.....

All 11 Books - Special Deal

All 11 Books - Special Deal

$543.00$490.00

ALL ELEVEN of Kevin O'Connor's audio books! Order all eleven current books by Kevin O'Connor.....

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

$62.00

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

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 London Power's Mini-Marshmallow amp, which was a tribute to Howard Dumble. The .....

D-PRE-HP

D-PRE-HP

$50.00

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

D-PRE-PCB

D-PRE-PCB

$38.00

D-PRE-PCB is just the printed circuit board and notes for our 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-to-find parts" for our F-PRE Fender-style Tube Preamp, including the printe.....

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 those of the "LPSP" London Power Stan.....

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 old" with a modern automatic ground-link .....

HF-QS - Hifi Quiet Supply Design

HF-QS - Hifi Quiet Supply Design

$2.00

HF-QS is used to provide extraordinarily smooth DC voltages to solid-state power amplifier front-.....

JLH-10 - Class-A PA Design

JLH-10 - Class-A PA Design

$2.00

JLH-10 is the classic 1969 John Linsley-Hood circuit of a solid-state 10W class-A power amp desig.....

LIC - Technology Licence (per unit, for commercial builders and installers)

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.....

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

We don't normally brag, but this is the best master volume on the planet! Truly transparent. No t.....

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 our LP-PRE London Power 2-Channel .....

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-to-find parts" for our M-PRE British-style Tube Preamp, including the print.....

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