Quantity   Component name
2 × 2N2222 NPN transistors
1 × 10K ohm potentiometer
1 × .1 uF capacitor
1 × 22 ohm resistor
1 × 100 ohm resistor
1 × 1K ohm resistor
1 × 1 signal diode
2 × Female RCA jacks
1 × Small experimenters circuit board