Solved
Is this(358 MZ839) amp??
Hi, I'm Emily Ha.
I wanna know this component.
'358 MZ839' and I attached the picture of it.
Fortunately, I've got reference PCB from my senior, but I cannot find out what it is.
I think this component as a amplifier (but I am not sure :( )
Please, help me to find out this!

