Tube Amp Kits & Mods

London Power's Own Designs!

Our tube amp kits, practical mods and building supplies. Kits are our own unique designs - not mass-produced overseas.

Friendly Canadian phone/email support is available while you install.

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.....

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.....

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

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

$140.00

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

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.....

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.....

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.....

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.....

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-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, .....

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,.....

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.....

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