Notes from Lorenzo...

The PCB Layout and the Parts Layout are bigger than 
real dimensions, so you will have scale down the images to proper dimensions in order to use them 
to etch a usable board.
 
This board is supposed to receive all the components (jack, pots and switches included), with no 
flying wires, so you will probably have to adjust the position of the solder-pads for S1, S2 and J1, in 
order to fit the pinout of the components in your hands.
 
The spacing among the pads of the pots is dimensioned to receive mini-pots (guitar pedal type 
pots).
 
In the Parts Layout picture you will see that C6 is shown as a rectangular component (not oval like 
the other ceramic capacitors). This is because I couldn't find a Ceramic Disk Type Capacitor of 1uF 
value, so I had to buy a poly capacitor of the same value.
 
In the board you will also find these additional components:
 
LED: bottom-left corner of the PCB – this is used to show the on/off status of the unit.
 
Rk: top-left corner of the PCB – this is a resistor used to give a proper supply to the LED. Choose 
the value you prefer.
 
Vol. Pot. = 100K – bottom-right corner of the PCB – this is just a Volume pot.