Size of Board: 55mm WIDE x 33 mm HEIGHT (1590B Okay!)
Use BAT41 for Dfor1 and Drev.
Dfor 2 is Germanium Diode, 1n34.
Tone control is actually B100k.
SF Resistor (Below the switch, beside the 2k2 resistor) are actually 6K2 OHMS.
Use OPA2604 or TLC2262. AD712 is another accident...accidentally cloned from ZDRIVE.
3 pads between the 2N7000 MOSFET are the HARD / SOFT Switch.