What is an M8348 IC?

[lax luthier]

Hello. I havee been examining a small test tool formerly owned by the Late Great audio designer James Bongiorno. It has a single 8 pin dip which is almost certainly some type of opamp.

However I've had little luck finding useful info about it online.

The only other lettering on it is 4250C/

Thanks in advance for any help with this, lax

[budm]

Re: What is an M8348 IC?

Pictures of what we are dealing with?
https://cdn.badcaps-static.com/pdfs/...571d111124.pdf

[lax luthier]

Re: What is an M8348 IC?

Thanks, budm. So it is an LM4250.

A photo would just show a small circuit board with an 8 pin DIP package and a handful of caps and resistors. Now I have a path to follow, thanks again, lax