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Vintage threads from the first ten years

5/9/1999 7:56 PM
CW	12AZ7 OK sub for 12AT7? I've looked through the RCA Receiving Tube Manual on this question, but the technical inferences are lost on me. Can anyone decipher and tell me if it is OK, good/bad/ugly, etc.? Thanks.

Replies:

M/J I have been using them for awhile i... -- 5/9/1999 9:27 PM
Doc The 12AZ7 has the same operating ch... -- 5/10/1999 10:18 AM