5 x TL072CD - Low noise JFET dual operational amplifiers - TL072C - TEXAS

TL074CD - Low-Noise FET-Input Operational Amplifiers - TL074C - TEXAS

2 x LM2902DP - LOW POWER QUAD OPERATIONAL AMPLIFIERS - ST

1 x MC33079P - DUAL/QUAD LOW NOISE OPERATIONAL AMPLIFIERS - MOTOROLA

5 x TL082C - JFET-INPUT OPERATIONAL AMPLIFIERS - MOTOROLA

5 x TL072IDR - Low-Noise FET-Input Operational Amplifiers - SOIC-8 - TL072I

LM358 ( x 2 pieces ) Dual Operational Amplifiers AOP DIP8

3 x LM358N - DUAL DIFFERENTIAL INPUT OPERATIONAL AMPLIFIERS - MOTOROLA