Pre Amps Booster 2 is signal boost engine. This device adds a preset amount of
gain with 4 knob control this lets you boost your signal for lead work, adjust between
two different guitars with unmatched output (i.e., humbucker to single coils),
or it can supply a permanent boost in a long effects chain where signal drop off
is a problem.

This device circuit design based on MOSFET BS170  offering up to 35dB
without changing your signature sound unless you so desire You can
fatten/distort your tone, brighten or mellow up the sound, add or subtract
Bass, and add even-order harmonics!

Works great when put this pedal front of non-Master-Volume Tube amps
to goose them into submission, as well as through Master-Volume amps to drive
them much harder than possible with just your guitar alone. It also works very
well on Bass, Acoustic Guitars (with Pickups) too.

The cool feature is “Shape”  knob control let’s you adjust DC voltage to MOSFET
drain it’s very cool feature let’s you setup the sound thin to fat when put this pedal
work as level booster with distortion or overdrive pedal. 

Voltage : DC 9v negative tip

Current :5 mA.

True Bypass circuit