Preamplifier 4558 Circuit Diagram Datasheet. The circuit is a simple two transistor pre amplifier using a feedback loop for enhancing the amplification. This circuit is a hi fi audio preamp using in the new audio systems.
But it has details that are not clear. Figure 1 the circuit diagram of low noise pre tone control circuit using ne55532. The low noise is one of the main characteristics of this circuit.
4558 ic audio power amplifier circuit diagram.
This preamplifier circuit is built with an op amp ic of tl072 the noise is one of the main problems in high end audio systems. The prefix lm stands for linear monolithic referring to the analog components integrated onto a single piece of silicon. Catalog datasheet mfg type pdf document tags. 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.
