3  LM741 Op-amp 8-pin DIP IC
1  2N3906 PNP Gen Purpose Transistor
1  2N3904 NPN Gen Purpose Transistor
5  2.2 k resistor
1  4.7 k resistor
2  0.47 uF ceramic disc capacitor

1  solderless breadboard
x  wires to use on breadboard (solid copper, prefer tinned)
1  wire cutting/stripping tool
1  function generator (sine, var freq)
1  +/- 12 VDC power supply (variable preferred)
1  signal cable, source to breadboard
1  oscilloscope
2  10M/1Mohm impedance oscilloscope probes