Our selection of unique Tube Preamp Kits features something for every sonic taste, from Fender, to Dumble, to British, to heavy rock, to modern metal, using 12A_7 tubes. Low-noise design uses 12V heater wiring.
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 EST
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.....
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
$50.00
D-PRE-HP is the "hard-to-find parts", essentially the printed circuit board and the tube sockets,.....
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.....
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
$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
$38.00
F-PRE-PCB is the printed circuit board plus assembly notes for F-PRE Fender-style Tube Preamp. .....
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
$120.00
The LINE kit is two buffer circuits with transformer-isolated outputs. These buffers can be fed f.....
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
$50.00
LP-PRE-HP is the printed circuit board, tube sockets and assembly notes for LP-PRE London Power 2.....
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
$115.00
M-PRE produces traditional British rock and metal sounds. The card allows wiring as a dual-volume.....
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.....
M-PRE-PCB
$38.00
M-PRE-PCB is the printed circuit board and assembly notes for M-PRE British-style Tube Preamp. .....
PRE1-BLT
$40.00
PRE1-BLT can be added to your order for any Tube Preamp that has a single tube, including: &n.....
PRE2-BLT
$80.00
Add PRE2-BLT to your order of a Tube Preamp that uses two tubes, to obtain that kit pre-assembled.....
PSP-BLT - Pre-assembly of Simple PSUs
$40.00
Add PSP-BLT to your order of PSU-PRE Power Supply Kit for Tube Preamp if you would like to receiv.....
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.....
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 - 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.....
REV-COMP - LP-Style Reverb Loop: PCB + Components only
$120.00
This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....
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.....
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 .....
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Specials
- - Amps & Gear Ordering
- - About Our Books
- - Selecting a TUT Book
- - Tube Amp Kits & More
- - About Our Rack-Mount Chassis
- - Hammond Chassis Applications
- - Selecting a Preamp Kit
- - About Our Switching Kits
- - Selecting a Sag/Sustain Kit
- - About Our Power Scaling Kits
- - Selecting a Power Scaling Kit
- - When Do You Need RBX Raw Bias Auxiliary Supply?
- - Other Retailers of Our Books
- - LP Tech: Evolution to Revolution
- - Standby Switches
- - Tube Amp Kits & More
- - Tube Amp FAQ
- - Power Scaling for Tube Amplifiers - Q&A
- - Super Scaling Q&A
- - Raw Bias Supply Issues & Mods
- - Power Scaling vs. Variable Power
- - PCBs vs. Hand-Wiring
- - PCBs - Colour Considerations
- - Tips on PCB Stuffing
- - Effects Loop Truths
- - Cathode-Bias/Fixed-Bias Switching in Tube Power Amplifiers
- - Hammond Transformers for Tube Audio Amplifiers
