In Reply to: New Vintage Phono Preamp posted by mark.korda@myfairpoint.net on October 1, 2014 at 11:10:49:
It would be interesting to hear how two rebuilt mono PAMs would sound. I think the two separate power supplies (done right) would be a plus. I remember reading something that John Curl said about the (I believe it was) JC-2 phono stage he designed, and Mark Levinson marketed.
One of the early users reported how much better using one JC-2 for each channel sounded, rather than one in stereo. Curl investigated, and found that it was the separate power supplies, and elimination of crosstalk (if I remember correctly) which made two sound better than one.
That being said, I would rebuild the two PAM-1s if I had a pair, but I wouldn't waste a lot of time on the various equalization curves, unless I had a use for them.
Let us know if you dive in to the project. I'd be interested in knowing how it goes!
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Follow Ups
- "New Vintage" Is that anything like Jumbo Shrimp? - 1973shovel 16:17:31 10/01/14 (0)