TL072

Reference: IC-257

CA3080E

Intersil OTA

Reference: IC-286

NJM4580D

Dual DIP-8 Operational Amplifier

Reference: IC-261

TL061

Brand: Burr-Brown

OPA2134PA

SoundPlus(TM) Hi-Perf Aud Op-Amp

Reference: IC-283

JRC4558D

Reference: IC-287

LM358AN

Reference: IC-268

TL062ACP

Reference: IC-292

CA3130

Brand: Analog Devices

OP275

Dual Bipolar/JFET, Audio op-amp

Reference: IC-288

NE5532AP

Texas Instruments DIP8

Reference: IC-264

MC1458

Reference: IC-294

LM324N

Quad opamp

Reference: IC-254

LM308N

Reference: IC-272

OPA2604AP

Burr-Brown DIP8

OP07N

DIP-8 Operational Amplifier

Reference: IC-273

TL022