LM358AN

Reference: IC-264

MC1458

Reference: IC-272

OPA2604AP

Burr-Brown DIP8

Reference: IC-265

CA3140

Intersil CA3140 BiMOS Operational Amplifier

Reference: IC-254

LM308N

Reference: IC-263

LM13600N

National Semiconductors

Reference: IC-258

TL082CP

OP07N

DIP-8 Operational Amplifier

Reference: IC-282

TL072

Reference: IC-275

UA741

Reference: IC-273

TL022

Reference: IC-257

CA3080E

Intersil OTA

Reference: IC-294

LM324N

Quad opamp

Reference: IC-261

TL061

Reference: IC-286

NJM4580D

Dual DIP-8 Operational Amplifier

Brand: Burr-Brown

OPA2134PA

SoundPlus(TM) Hi-Perf Aud Op-Amp

Brand: Analog Devices

OP275

Dual Bipolar/JFET, Audio op-amp