BG> It sounds like you did your grounding via the brute force method on
BG>your board design. That works too, most of the time. Seperating chip
BG>grounds from signal grounds can be a problem though in this situation.
BG>Paying attention for ground loops can be done on a board level though.
Basically I just made a 'rail' and tied every ground to it.
It's not pretty, but it works.  
BG>Ah yes, Walter Jung is THE MAN as far as Op Amps go. I have learned much
I wish he'd write an "Op amps for dummies" type book.  I didn't know
much theory when I read his "Audio IC Op Amp Applications," so I had
a hard time figuring out what he was saying.  But that book has more
circuits than Carter has pills, and unlike some books, the circuits
actually _work_!
BG>Your idea of getting the transformer away from the box was probably your
BG>biggest contribution to the low noise of your preamp along with your
BG>care in grounding techniques.
I just made a virtue of necessity -- the transformer wouldn't _fit_
in the original box.  Then I remembered that Crown had once made a
trick preamp where the PS was in a separate box.  Hmmmm....
I also built the phono preamp right into the turntable -- them
teeny little wires come right out of the arm and into the chip.
That and Walter's great phono circuit really surprised me when
I first played a record thru it.  Not bad for fifty bucks!
At one point I was trying to figure out how to put the op amp
right on top of the cartridge on the tone arm, but cooler neurons
prevailed.  
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