Can you help idenify IC chips?
I am trying to identify 3 IC chips for possible use with the https://www.instructables.com/id/Headphone-amplifier/ project.
They areall from cd drives for old PCs.
Manufacture by TOP-G
Model #: BCD E520C
The headphone piece was seperate of the main board (as well as the next one) and is labeled Mitsumi 74-4602A
Seperate board label: LMJB0187B
I have had zero luck finding these but I've never had any luck finding IC chips.