6J2 tube rolling?


If I have a tube phono preamp with 6J2’s from the factory what would I try if I wanted to roll them to something better? A better brand 6J2? If so, which? 

Another tube all together? If so, which? 
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Showing 1 response by three_easy_payments

@dougeyjones   Just curious, which phono pre do you have that utilizes those tubes?