TL074CN

Reference: IC-264

MC1458

Reference: IC-282

TL072

Reference: IC-294

LM324N

Quad opamp

Reference: IC-285

OPA2134PA

Reference: IC-265

CA3140

Intersil CA3140 BiMOS Operational Amplifier

Reference: IC-254

LM308N

Reference: IC-287

LM358AN

Reference: IC-268

TL062ACP

Reference: IC-272

OPA2604AP

Burr-Brown DIP8

Reference: IC-257

CA3080E

Intersil OTA

Reference: IC-263

LM13600N

Reference: IC-292

CA3130

Reference: IC-261

TL061

Reference: IC-288

NE5532AP

Texas Instruments DIP8

Reference: IC-286

NJM4580D

Reference: IC-273

TL022