The circuit for these two are verbatim. Escobedo just has a trimmer to bias the JFET, where JHS has 5K1 resistor. He probably uses matched j201s…
JHS info:
A good booster is often the most underrated tool a
guitarist can own. When placed before your overdrives or distortions, a
thicker, stronger and more saturated tone can be achieved. When placed
after, you get your exact same tone except louder. This is great for
lead passages and for causing a tube amp to naturally overdrive due to
its huge amount of headroom. You will notice a slight touch of presence
that lets your tone cut through the mix for those passes that you really
want to stand out. Chords are heard with clarity and subtle harmonics
shine! The Mini-Bomb JFET boost can do all this and only takes up a
small 1.5″x3.5” spot on your pedal board!
Oh yea, and did we mention….this pedal works great on both electric guitar and bass guitar!!!
guitarist can own. When placed before your overdrives or distortions, a
thicker, stronger and more saturated tone can be achieved. When placed
after, you get your exact same tone except louder. This is great for
lead passages and for causing a tube amp to naturally overdrive due to
its huge amount of headroom. You will notice a slight touch of presence
that lets your tone cut through the mix for those passes that you really
want to stand out. Chords are heard with clarity and subtle harmonics
shine! The Mini-Bomb JFET boost can do all this and only takes up a
small 1.5″x3.5” spot on your pedal board!
Oh yea, and did we mention….this pedal works great on both electric guitar and bass guitar!!!
Here’s Geiri’s demo of his two boards in series in one A-box: