KIA4558P ???? anyone have experience with it ?

[Melanhead]

Not that it matters much but I found a batch in my parts drawer ... just curious if anyone has used this version ....

I have some JRC's and TI's as well which I'm assuming are the more common in FX ....

[Steben]

Work as good as any 4558 chip.
the values of the parts around the opamp are the mopst important.