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"Gain Matched + Balanced Cathode Sections" are going to run me a tad more than just "Gain Matched" and I'm wondering if it's worth it?
"I'll play it and tell you what it is later..." - Miles Davis
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Anywhere near a tubed phono stage I would go for "low noise and low microphonics" over any other selection criteria.
Assuming of course that you can get your tubes pre-selected that way.
As usual I am sure someone will correct me if I am wrong or voice a contrary opinion, but I just looked for unused tubes of the same type and date with a good reputation for sound. Never thought twice about any sort of matching within or between tubes after reading up on the issue and initial concern over it. Only time I have ever worried about that is for pairs in a push-pull amp. And I never noticed balance problems or performance problems in my Seduction (or FPII, III, Paramamounts, or S.E.X. amp). It just never seemed important enough to me to pay for. And I am on to the Eros now and just buying the same sort of tubes.It would be interesting to take an unmatched set and compare them to a closely matched set and see if you could hear the difference.
Edits: 10/02/09
Usually a seller who says gain matched for a pair of tubes would mean, in the least, that each of the A and B triodes have the same gain. That is the two tubes first triodes are the same, etc.
Possibly all four sections are the same. But if you are critical of balance these tubes would work well for you.
I have found that each recording has a different right to left balance. If I were as critical as my brother I would adjust the balance on every album.
Remember, YOU are the only one who needs to be happy with the sound of your system
Grainger Morrison
There Is Only One (Grainger Morrison, it seems)
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