I got an email from Fosgate Audionics.....!

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sqdave1975

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I recently emailed Fosgate Audionics about my Tate, to clarify exactly what the units with AA at the end of their serial numbers offered.

Joe Dahlquist was kind enough to email me back, and here's what he wrote :-

The "AA" rating on the TATE 101A refers to having matched steering IC's. The parts when purchased from the supplier were graded on linearity amongst other things. The premium pieces (parts that scored highest in testing prior to being used) were set aside. The units denoted with a "AA" were able to utilize only the cream of the crop IC's. I would consider myself very lucky to have one of these. Quite a find there indeed!

Thanks
Joe Dahlquist

So there you have it, folks! another great piece of info to add to the quad files !! :D
 
This is very interesting! Dave what is your complete serial #?
Mine is a XR2520A, talked with Bob and had him look at his serial # list and has never had a AA model on his bench, he has worked on two A units mine and some one in OK. Bob has many B models on his list and sez he has heard of C models.

Dave
 
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