Materials List for Sound Digitizer Quantity Item IC 3 LF356 1 LM393 Resistor 6 10K resistors 2 1K resistors 2 47K resistors 1 100K resistor 1 100 ohm resistor 1 5.1K resistor 1 50K linear pot Capacitor 1 .1 mfd 4 10 mfd elec. 25 WV 2 .001 mf 2 220 pf 4 .01 mfd Misc. 600 ohm dynamic mic. (300 Ohm works OK) Battery holder (for 8 AA batteries) Alkaline batteries (8 AA) Case 12V power indicator. (LED) Jack for mic.