NE5532AP

Reference: IC-268

TL062ACP

Reference: IC-264

MC1458

Reference: IC-294

LM324N

Quad opamp

Reference: IC-282

TL072

Reference: IC-273

TL022

Reference: IC-263

LM13600N

National Semiconductors

Reference: IC-258

TL082CP

Reference: IC-259

LM13700

Dual Operational Transconductance Amplifier with Linearizing Diodes

OP07N

DIP-8 Operational Amplifier

Reference: IC-257

CA3080E

Intersil OTA

Reference: IC-261

TL061

Reference: IC-275

UA741

Reference: IC-283

JRC4558D

Reference: IC-292

CA3130

Reference: IC-254

LM308N

Reference: IC-272

OPA2604AP

Burr-Brown DIP8