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Old 5th June 2012, 09:02 AM   #11
lohk is offline lohk  Europe
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Well, that's what I was told by a Cyrus technician long ago - one should always refer to neutral sources, thanks for that.
Later Mission/Cyrus used the PT7 version in a TO-147 package, do you think it is the same die?
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Old 5th June 2012, 09:09 AM   #12
lohk is offline lohk  Europe
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And: labelling is actually customizing, in a way.
And: how do you know that? The only reference I found was/is the circeling internet information, which also might not be true. Which database are you referring to?

Using low-biased high-speed switching transistors for Class-ab power stages is successfully used by NAIM for decades, works seeming also for Mission/Cyrus' Henry Azima. Others too?
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Old 5th June 2012, 09:12 AM   #13
lohk is offline lohk  Europe
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I remember that the PT77 and the PT7 was explained to me as a "selected and mil-spec" version.
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