Find out which one you have, and get the datasheet to start getting an idea of what kind of beastie you have there. I wouldn't be surprised if you have a clone of a common op-amp like the uA741, LM358, or TL02. I wouldn't be surprised if NEC doesn't make anything original -- they may well just be giving over some of their fab capacity to second-sourcing efforts.
Top Mall-Fi poster. The T in META42. Formerly with Tangentsoft Parts Store
Sep 27, 2001
That chip looks to be worse than the TL082, which is barely suitable for audio use in modern equipment. Once upon a time, it might have sufficed, but today there are so many chips that are better for just a few dollars that there's little point in using such a weak chip.