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tube matching in groups or bias

I have a pair of tube monoblocs that take ten el34's for each amp. Each tube can be biased individually. I will soon be to the point that the power tubes need to be replaced. In this situation is buying matched sets of tubes important or will any new el34 tube within the same brand work buy simply adjusting the bias? These tubes are generally cheaper if the matching process is not required, and matching twenty tubes could be quite an expensive process.
bohemian7

Showing 3 responses by avguygeorge

avguygeorge
2,300 posts
 
I have the CJ5 monos. 8 per mono. The beauty of "our" amps is the amp trim pots do the work.--No matching necessary. I use the Seimens,what brand are in there now?-What brand are you looking at?
avguygeorge
2,300 posts
 
No, tubes are listener dependent. For my CJs everybody and his brother recommends Svetlana; I have a complete set:( I've stuck them in twice) Not the same as Siemen; they have this magcal top end the Svets. lack.

As Albert pointed out in another post; your tubes are Russian Sovietec--(sorry 'bout the spelling--);and are similar to Svetlana.

I paid 50bucks ea for my Siemans.--Haven't heard the Mullards so I can't comment on 'em.
avguygeorge
2,300 posts
 
Hi, Albert. What 6922's? Is there much dif (beyond price) in the cca? I was tempted to pick up some Sylvania-cca's--Cheep at the price.
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