I was looking at making an AC powered PIMETA or something similar to power my RE0s at work instead of using my 160GB iPod 6G. Given the information here, and considering I work in a reasonably noisy environment (lots of test equipment with small fast fans), it's probably safe to say I wouldn't...

Would there be much of a difference between using 3 627/637 with the Pimeta vs a 2132 and 627 for the ground? I actually kind of prefer the OPA2132 since I have them in SOIC packages and only have the OPA627, OPA637 and BUF634 in DIP packages. It's more of a PITA to use DIPs with DIY boards...

With all the fakes on eBay, is it worth trying to sell any of these op amps there? I'm trying to clean out my basement but I'm kind of sketched out that everyone else posting auctions there are based in China.   Does anyone here still buy these items off eBay?