[quote author="Siegfried Meier"]
On another note, API will not sell you their 2520 opamp unless you send your old bad ones back. Is this also to try to stop the cloning?
Thanks,
Siegfried[/quote]
I bought a 2520 from a shop in sweden last week and I was never asked for a bad one in return. But the salesman asked what i was gonna use it for, i said a 312 and he sais ok.
HT