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Primaluna signal tube replacement

I need to replace my small signal tubes in my 2 year old Dialogue Premium.  The 2 middle tubes are good.  I had replaced those with GL 12au7.   The outer tubes are stock Primaluna.   Left channel got “scratchy” and I replaced with some backups. 
Do I go cheap? Doesn’t affect audio quality,,right?  Or pay more for longevity?  Love the amp and it’s on a lot.  Thanks for your advice. 

george53

Showing 1 response by johnss

johnss
564 posts
 

I would replace all the stock 12AU7s with NOS or UOS RCA or GE tubes. 

and you can sub in the 5814As which are electrically the same but are lower noise tubes. Have owned 7 of the PL amps. One of the biggest improvements I got was pulling all 6 of the input tubes and replacing with RCAs. They are not expensive either, tons and tons of 12AU7 and their variants were made. 

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