Based upon the last comment made about 'tube ego'I must tell you that a very good friend of mine recently dropped 1350 US dollars on a total of 9 tubes.These were 6 TELE 6922 cca's and 3 regular low noise 6922's.He has the same pre-amp as me,a highly modified,Audio-Research SP-15.This takes only 3 tubes for the phono stage,and after the almost total re-build of the unit by GREAT NORTHERN SOUND,a mod specialist on audio research stuff,the performance went into the stratosphere.UNTIL he replaced his MULLARD's with the new HIGH PRICED SPREAD,which were cold,and thin.Actually they sounded dreadful!However to justify his purchase,and knowing I was coming over later that week,for a listening session,all he kept talking to me about was how GREAT the new tubes were.Needless to say,he got rid of all nine tubes(one set,and two back up sets)and went on to purchase,again, they had to be REALLY expensive or they could not be acceptable,to him, the most costly gold pinned Mullards he could find.Which are better than the previous batch,but,unless you are willing to do some 'tube rolling'you will never know!
Difference between Amperex 6922 pinched waist tube
I wonder if there are differences in the Amperex 6922 pinched waist gold pin tubes that I have heard about. I see some were made in Holland and some were made in the US. Is one supposed to be superior to the other. I have read that they are pretty much the holy grail of Amperex tubes. I just picked up some Siemens CCa tubes and really am impressed but figure I may as well see what else is in their league. Thanks for any advice as I could always use it.