[AMPS] What Tube for Home brew

[Matt--K7BG]

> The changes in the D7 did not address this problem to any
>appreciable extent.


Ignoring the latest and greatest "Z7" for the moment. What exactly are the
differences between the A7 and the D7? I searched all the amp archives and
found nada. Are the 1200A7 and the 1200D7 interchangeable?

73, Matt--K7BG


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