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?
Jfreck - I've tried and permutated with most of the acclaimed tubes out there and yes you win some but lose some.... After one big big cycle, I landed back to the stock tubes.... Quite a joke right?
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