JRC4558 Dual Operational Amplifier IC

Description

JRC4558 is a high performance monolithic dual operational amplifier integrated circuit. internally compensated and constructed with bipolar transistors on a single silicon chip. The high voltage gain (100 dB typ.), good input impedance (5 MΩ typ.) and versatile power supply (± 4 to 18 Volts) make it perfect to fit in pedal circuit designs.

You can read the complete IC datasheet here