Mic pre-amp circuit using ic 4558 is a series of mic amplifier based on ic 4558 and also could use other op-amp ic ie TL072 / TL082 / NE5532. And a transistor C945 as a buffer circuit and other components of resistors and capacitors. See circuit schematic of mic pre amplifier :
Description Mic Pre Amplifier using IC 4558Mic pre-amp circuit is equipped with several tone setting , that is :
Gain_____Adjusting Gain Mic up to 10dB
High_____Adjusting High Frequency by using Potentio 100K
Mid______Adjusting Midle / Vocal tone
Effect ____Adjusting Mic Effect and output is divider on Out Eff
Monitor___Monitoring output mic to adjust how output desired mic.
Pan______Adjusting Balance L and R output
Volume___Adjusting Volume All tone setting Mic Pre Amplifier
Power Supply :
This Mic Pre-Amp Circuit need +15 -15 G DC AsymmetricVoltage Supply , For stabilization power supply you can add voltage stabilizer 15-Volt Stabilizer circuit.
Project of Mic Pre Amplifier Mic And Tone Control C828 + Sub