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question regarding 12au7 tubes

I needed 2 12au7 tubes for my preamp and so went to a local tube store and told them what I needed.

He sold me 2 tubes and even though they arent 2 RCA's or 2 Amperex , but one of each and the specs, all the insides are the same and they test the same, are they still considered a matched pair ?

I have listened to them and notice no difference.
riley804

Showing 3 responses by riley804

riley804 OP
1,224 posts
 
So I have nothing to worry about even though both tubes dont have the same company name on them ?

If so, can they still be considered a matched pair ? They were tested on a machine and were very closely matched spec wise. Only difference is the name.

Just trying to get some clarification.....
riley804 OP
1,224 posts
 
Its only a 30 minute drive or so....and when you walk in the store/warehouse, all you see are tubes. Tubes from all different sizes and some I believe he is collecting as they are in glass cases.

Only issue ( if you want to call it that ) is that he starts talking specs, numbers, history of each tube and then he loses me....but its still cool to go there.
riley804 OP
1,224 posts
 
Here is the store that I visit.

http://vacuumtubesinc.com/
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