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.....
PRE1-BLT
$40.00
PRE1-BLT can be added to your order for any Tube Preamp that has a single tube, including: .....
PRE2-BLT
$80.00
Add PRE2-BLT to your order of a Tube Preamp that utilises two tubes, to obtain that kit pre-assem.....
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
$50.00
D-PRE-HP is the "hard parts", essentially the printed circuit board and the tube sockets, plus th.....
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.....
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 parts" for an F-PRE Fender-style Tube Preamp, including the printed circuit.....
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)
$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 LP-PRE London Power 2-channel Tube.....
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 parts" for M-PRE British-style Tube Preamp, including the printed circuit b.....
M-PRE-PCB
$38.00
M-PRE-PCB is the printed circuit board and assembly notes for M-PRE British-style Tube Preamp. .....
PSU-PRE - Power Supply Kit for Tube Preamp
$98.00
PSU-PRE can support up to six 12A_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
$120.00
This is the London Power style reverb loop, using a push-pull reverb driver and two-stage recover.....
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.....
REV-PCB
$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 .....
TX316 - Push-Pull Reverb Driver Transformer
$48.00
Hobbyists and amp builders can now use the same high-quality transformers and chokes found in Lon.....
Product Categories
- Studio Gear
- All Books, Kits & Mods
- All Audio Design Books
- TUT Guitar Amp Books
- Hifi Design Books & DSN-1
- All Kits & Mods
- Power Scaling Kits
- Power Amp Kits
- Tube Preamp Kits
- Amp Mods
- PCBs for Tube Projects
- Power Supplies
- Channel Switchers
- Effects Loops
- Sustain Kits
- Building Supplies
- Hifi Design Downloads
- MI Design Downloads
- Technology Licencing
- Special Deals
Specials
- Studio 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?
- LP Tech: Evolution to Revolution
- Standby Switches
- Tube Amp Kits & More
- Tube Amp FAQ
- Power Scaling 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
