NE5532AP

Reference: IC-257

CA3080E

Intersil OTA

Reference: IC-272

OPA2604AP

Burr-Brown DIP8

Reference: IC-275

UA741

Reference: IC-265

CA3140

Intersil CA3140 BiMOS Operational Amplifier

Reference: IC-258

TL082CP

Reference: IC-259

LM13700

Dual Operational Transconductance Amplifier with Linearizing Diodes

Reference: IC-276

TL074CN

Texas Instruments DIP14

Reference: IC-264

MC1458

Reference: IC-294

LM324N

Quad opamp

Reference: IC-273

TL022

Reference: IC-286

NJM4580D

Reference: IC-287

LM358AN

Reference: IC-263

LM13600N

Reference: IC-261

TL061

Reference: IC-285

OPA2134PA

Reference: IC-282

TL072