Build a Stand-Alone Tube Preamp for Guitar or Bass
The London Power Preamp Kits series allows hobbyists to build a stand-alone tube preamp for guitar or bass. The PSU-PRE power supply supports up to four tubes and allows multiple preamp kits to be combined to create a multi-voice system. London Power’s Galactic Ground is used for low noise and low hum. For elaborate preamps incorporating up to 21 tubes, use the PSU-10 actively regulated power supply.
Each kit uses a silk-screened fibreglass-epoxy printed circuit board to make assembly quick. Tube sockets are high-quality ceramic. Kits include instructions, the printed circuit board (PCB), socket(s) and electronic components. Component packages include metal-film resistors, plastic and electrolytic capacitors and 16mm pots that accept push-on knobs.
All boards and assemblies will fit within a 1U rack-mount chassis height (we have these here). Tubes and PCBs can be mounted in any orientation in larger chassis.
Tubes, wire and chassis are not included, as each builder will have his own preferences and aesthetic requirements.
The Preamp Series Kits include:
PSU-PRE – Power Supply for Tube Preamp
REV – LP-Style Preamp Loop
LINE – Dual Output Buffer
D-PRE – Mini-Marshmallow Preamp
F-PRE – American-Style Preamp
LP-PRE – London Power 2-Channel Guitar Preamp
M-PRE – British-Style Preamp
S-PRE – London Power Spectrum Bass Preamp
V-PRE – Vox-Style Preamp
Z-PRE – High-Gain Preamp Kit
Combine a tube preamp with PSU-PRE to make a stand-alone preamp.
Please also review the Safety page on this site.