Group Buy: legit, non-fake CA3080AE ICs - new from Rochester Electronics

[Barcode80]

The LM13700 ICs that I have found (with US sources) are all priced at over 2.50 per item (unless you buy like 500 of them).  Futurlec has them at 1.50... but I never really know if I can trust their parts. My sense is that they aren't out to fool anyone, but that they aren't all that tight on quality control either. My fears may be unfounded though. Any opinions on this???

And I would still personally like some 3080s anyways. I'd rather not spend time making adaptors when repairing old pedals and analog synths. But I totally agree that it's somewhat pointless if you are designing your own stuff.

Lm13600 is a functional and pin for pin equivalent to lm13700. It can be had for $.85 right here:

http://www.smallbearelec.com/Detail.bok?no=224

However, as my thread on the subject proved out, it is not that easy to redesign circuits to use LM13700 (LM13600) in place of CA3080. Read more here:

http://www.diystompboxes.com/smfforum/index.php?topic=90066.20

That thread proves that it's not that easy?

It's not that easy, if you don't spend the time to understand OTAs, or electronics for that matter.  

That thread, and another where I drew a working schematic to make the Microsynth filter which uses 3x3094 OTAs (much more rare and expensive than 3080s) work off 13X00 OTAs (smallerbear - 85 cent dual package; mouser - 65 cent dual package) should prove that it IS easy.  It's as easy as making an old circuit/schematic that uses 1 741 op-amp work with a 4558.  It's not as easy as replacing the dual op amp in a tubescreamer.  

Yes, I know. My point with the "not that easy" comment was the purpose of that thread was for coming up with a "standard" way that you could drop in a circuit block of some sort to directly replace the 3080. Almost like a "take this portion of the schem and replace it with this configuration of components", much like you can do to replace an opamp with discrete components. Obviously, if you understand the behavior of OTAs and the differences between each, as well as how the OTA is being utilized within the specific circuit, then of course you can redesign to accommodate. But that wasn't the point of that thread. The point of the thread was to find a way to take an existing circuit designed around a 3080 and find a "drop in" way to utilize 13x00 chips in it, requiring a daughter board or something for sure but allowing those with non-functioning units using the 3080 chips to bring their effects back to life. Perhaps that's not clear from the thread, but that was the intent.

And no need for the condescending attitude, btw.