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RAM cherry-picking new production is good practice, but I have seen postings here and there by people who have done some rolling that they have preferred NOS in quite a few cases over RAM tubes.
...people who have the pockets to try out many different kinds of tubes (including) RAM, and have no other objective than describing their experiences, positive and/or negative, with RAM tubes, new production and NOS.
Im not getting what you are saying.
Also you wont ever mistake a superb testing RAM EH6922 as sounding like a 50s or 60s Amperex. I cant imagine a person favoring the 6922- but I guess Ive seen crazier things
But their opinion is still totally subjective.
Quote from: pbrstreetgang on 11 Aug 2008, 12:28 amAlso you wont ever mistake a superb testing RAM EH6922 as sounding like a 50s or 60s Amperex. I cant imagine a person favoring the 6922- but I guess Ive seen crazier thingsBut this statement confuses me. Are you saying someone would favour the Amperex or RAM?
I guess, such it is. Though I would argue, this is not necessarily bad or wrong if done without self-interest or a bias.I remember Vacuum Tube Valley magazine once published a rating of various classic tubes such as 6L6GCs and 12AX7s (I think authored by Eric Barbour). Do you take issue with this too?
... reveals a much greater influence of the tube on one of the amps as compared to the other. Which amp would you like me to base my opinion about either tube on ?
There are only a few tubes that actually have ever had a noise spec. Noise testing is very difficult and not part of a factory's test procedure, I know because I visited the factories and asked them. At EI, the most syphosticated equipment was a Tektronix curve tracer that hadn't worked for several years. I asked them how they produced the curves for the KT-90. The chief engineer said, "we did it steady state with meters, and we did it fast" They had to do it very fast or the tube would go up in flames.
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