Thread: Need pointers on 65 zenith color roundie 25mc33
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Old 07-07-2015, 10:02 AM
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63bird 63bird is offline
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I notice most these tubes have a A,B or C at the end of the part number do these make a difference?

I know in audio Amps a 12ax7A is a little better than a 12ax7 in noise.

The 3at2 among others come in A,B or C at the end.
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