Tube kit for Nagra PL-L?


Nagra recommends that users purchase a "tube kit" from them as tube replacement. This at a price of a couple hundreds of $. What is so special about these tubes? Aren't these Sovtek tubes that are easily available off the shelves?

Any one made any comparison with these tubes?
shsohis

Showing 3 responses by lenny_zwik

I suspect that Nagra test and match these tubes to standards significantly above what you're likely to acquire off the shelf.
@Mcintech: Are the tubes the same in either kit? You just don't get all the ancillary "bling", in which I have no interest anyway.