JRC4558D

The JRC4558D is a dual low-noise op-amp IC from Japan Radio Company (JRC).

Contains two independent op-amps in a single 8-pin DIP package.

Designed for high-fidelity audio applications, but can also be used in general-purpose analog circuits.

Famous for its use in guitar effects pedals, mixers, and audio preamps, because it gives a slightly “warm” sound in some analog audio circuits.

📊 Key Specifications
Feature Specification
Op-Amps per IC 2
Supply Voltage (Vcc) ±3 V to ±18 V (dual supply) or 6 V to 36 V (single supply)
Input Offset Voltage 5 mV typical
Input Bias Current 80 nA typical
Input Voltage Range V− + 2 V to V+ − 2 V
Output Voltage Swing V− + 0.7 V to V+ − 0.7 V
Slew Rate 9 V/µs typical
Gain Bandwidth Product 3 MHz
Output Short-Circuit Protection Yes
Operating Temperature 0 °C – 70 °C
Package DIP‑8, sometimes SOIC‑8
🧠 Features

Dual op-amp in 8-pin DIP

Low noise and low distortion (good for audio circuits)

Wide voltage range (3 V – 36 V)

Short-circuit protection on outputs

High slew rate suitable for audio applications

Compatible with standard op-amp configurations: inverting, non-inverting, comparator, integrator, filter, etc.

🛠 Applications

Audio preamplifiers

Guitar effects pedals (overdrive, distortion, boost circuits)

Active filters (bass/treble tone controls)

Oscillators

General-purpose analog signal processing

Comparator circuits for control electronics

💡 Pinout (DIP‑8 Version)
+Vcc
|
8 --------- Vcc
7 --------- Output B
6 --------- Inverting B
5 --------- Non-Inverting B
4 --------- GND
3 --------- Non-Inverting A
2 --------- Inverting A
1 --------- Output A

Op-amps A (pins 1–3) and B (pins 5–7)

Pin 4 = GND (V−), Pin 8 = Vcc (V+)