All Books, Kits & Mods

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

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.....

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.....

All 11 Books - Special Deal

All 11 Books - Special Deal

$543.00$490.00

Order all eleven books by Kevin O'Connor, and save money! Get TUT, TUT2, TUT3, TUT4, TUT5, T.....

PSU-100 - Super-Quiet Power Supply for 100W Tube Amp

PSU-100 - Super-Quiet Power Supply for 100W Tube Amp

$520.00

PSU-100 is a super-quiet power supply that can support 100W-worth of tube audio power amplificati.....

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.....

TUT-DEAL - TUT Deal

TUT-DEAL - TUT Deal

$408.00$367.00

TUT-DEAL is all six volumes of The Ultimate Tone series. Buying the books separately would cost $.....

PSU-50 - Super-Quiet Power Supply for 50W Tube Power Amp

PSU-50 - Super-Quiet Power Supply for 50W Tube Power Amp

$390.00

PSU-50 is a super-low-noise power supply that supports a 50W tube power amplifier, or a 25+25W st.....

PSU-25 - Super-Quiet Power Supply for Tube Power Amp + 25W Transformer

PSU-25 - Super-Quiet Power Supply for Tube Power Amp + 25W Transformer

$362.00

PSU-25 supports a 25W tube power amp and preamp and is optimally matched to London Power's PA66-2.....

PA66-50 - PCB + Components + OT-50

PA66-50 - PCB + Components + OT-50

$348.00

The London Power PA66-50 Octal Push-Pull tube power amplifier can be used with any of the common .....

PSU-10 - Super-Quiet Power Supply for 10W Tube Power Amp

PSU-10 - Super-Quiet Power Supply for 10W Tube Power Amp

$320.00

PSU-10 supports a 10W tube power amplifier and preamp and is an ideal match to London Power's PA6.....

PA66-976 - PCB + Components + LP TX976 Transformer

PA66-976 - PCB + Components + LP TX976 Transformer

$306.00

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

PA66-25 - PCB + Components + OT-25

PA66-25 - PCB + Components + OT-25

$264.00

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

PA66-10 - PCB + Components + OT-10

PA66-10 - PCB + Components + OT-10

$245.00

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

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.....

REV - LP Style Reverb Loop Kit

REV - LP Style Reverb Loop Kit

$180.00

This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....

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.....

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.....

PSU-COMP - Super-Quiet Power Supply for Tube Amp - PCB + Passive Components

PSU-COMP - Super-Quiet Power Supply for Tube Amp - PCB + Passive Components

$158.00

PSU-COMP is the PSU-TPA tube amp power supply PCB plus the components that mount on the board, pl.....

PA66-COMP - PCB + All Passive Components

PA66-COMP - PCB + All Passive Components

$138.00

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

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.....

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.....

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 (.....

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.....

TX976 - 50-100W Output Transformer

TX976 - 50-100W Output Transformer

$120.00

Hobbyists and amp builders can now use the same high-quality transformers and chokes found in Lon.....

REV-COMP

REV-COMP

$120.00

This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....

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.....

Z-PRE - High Gain Preamp Kit

Z-PRE - High Gain Preamp Kit

$115.00

Modern high-gain guitar sounds are easily produced with a pair of 12AX7 tubes in a cascaded four-.....

S-PRE - London Power Spectum Bass Preamp Kit

S-PRE - London Power Spectum Bass Preamp Kit

$115.00

The S-PRE is based on the preamp sections of London Power's SPECTRUM bass amps. The front end is .....

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.....

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.....

QRK-MINI - 4-voice amp control package

QRK-MINI - 4-voice amp control package

$100.00

QRK-MINI is a discount package containing QRK-LATCH and QRK-MNR. The most popular multi-voice.....

TUT4 - The Ultimate Tone Vol. 4

TUT4 - The Ultimate Tone Vol. 4

$98.00

The Ultimate Tone Vol. 4 - Advanced Techniques for Modern Guitar Amp Design By Kevin O'Connor.....

PSU-PRE - Power Supply Kit for Tube Preamp

PSU-PRE - Power Supply Kit for Tube Preamp

$98.00

PSU-PRE can support up to five12A_7 tubes - enough for a 3-channel preamp with effects loop, cons.....

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.....

REV-HP -  Reverb PCB + Hard-parts

REV-HP - Reverb PCB + Hard-parts

$92.00

This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....

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.....

V-PRE - Vox Top Boost Preamp

V-PRE - Vox Top Boost Preamp

$88.00

V-PRE is the famous Vox "Top Boost" channel of their classic AC-30 amp from the 1960s 3-w.....

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.....

EYELETS-1k

EYELETS-1k

$84.00

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

SV-BLT - Pre-assembly of Power Scaling Kit

SV-BLT - Pre-assembly of Power Scaling Kit

$80.00

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

QLTCH-BLT - Pre-assembly of QRK-LATCH

QLTCH-BLT - Pre-assembly of QRK-LATCH

$80.00

Add QLTCH-BLT to your order of QRK-LATCH if you wouldlike to receive a pre-assembled board. I.....

PSU-BLT - Assembly of Large Power Supply

PSU-BLT - Assembly of Large Power Supply

$80.00

Add PSU-BLT to your order, to have the following products shipped pre-assembled: PSU-COMP.....

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: .....

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 .....

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.....

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 .....

QRK-LATCH - Quad Voice Controller for Guitar Amps

QRK-LATCH - Quad Voice Controller for Guitar Amps

$73.00

 QRK-LATCH is the heart of the QRK Quad Relay Kit amp switching system. provides a 1.....

QRK-FET -  Quad Jfet Interface for Series and Shunt Switching

QRK-FET - Quad Jfet Interface for Series and Shunt Switching

$70.00

QRK-FET interfaces QRK-LATCH (or similar control circuitry) with four groups of  jfet switch.....

PX66-COMP - Card for extra power tubes with components

PX66-COMP - Card for extra power tubes with components

$70.00

PX66-COMP allows additional pairs of output tubes to be added to PA66 for more power, fuller tone.....

TUT6 - The Ultimate Tone Vol. 6

TUT6 - The Ultimate Tone Vol. 6

$68.00

The Ultimate Tone Vol. 6 - Timeless Tone Built for the Future Today   By Kevin O'Conno.....

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