Source Audio SA271 ZIO Analog Front End + Boost Effects Pedal
Activator 2 - A DIY onboard JFET preamp kit for guitars and basses
Two-Stage JFET Preamp/Booster under Repository-circuits -49675- : Next.gr
Guitar Pedal X - GPX Blog - Horrothia's Triage Discrete All-Transistor JFET Pre-Amplifier is a Beautifully Elegantly Textured Low to Mid Gain Overdrive
Breadboarding a Simple JFET Booster - Barbarach BC
Peppermill guitar overdrive - H&G Amplifiers
Peppermill
Schematic: High-impedance preamplifier with MPF102 JFET. Easy to build. Battery-powered. Radio Shack stoc… | Circuit diagram, Buffer amplifier, Radio shack
JFET guitar Pre-amp | diyAudio
Schema-preamp-jfet | Anasounds
Weehbo Tackleberry JFET Preamp | Delicious Audio
JFET Preamp | Circuit diagram of my JFET preamp. | germanium | Flickr
Building JFET Preamplifiers for Musical Instrument Use. : 9 Steps (with Pictures) - Instructables