Replacing 12AU7 tubes in a Prima Luna Dialogue integrated amp

OK, swapping the tubes from socket to socket to optimize sound.  Fun with 6 to mix-and-match...

All sorts of new things to look into and learn.

Thanks for the confirmation, just hate forcing stuff when I am not sure.

Have seen reference to "rolling tubes"... no clue what that is/means... but will do some web searches.'

Thanks!

And unfortunately Upscale Audio won't deal with International customers, I live in Australia....

Have KT88's in the amp.  Looking into the TungSol KT120's.

Will look into the Cifte's.  All this is new and I get the fact different tubes have different tonal/power quantities, but I'm not a "tweaker" who really wants to get into buying boxes of different tubes and spending days plugging them in and out and looking for somewhat subjective improvements.   I'll make a few minor adjustments but for the most part am happy with the way it sounded the past two years with the Prima Luna Silver AU's and stock KT's.  Replacing with the PL Gold. Maybe the 2 Clifte you note.

But as one's gone and time to replaced figured a bit of minor research for a simple upgrade was worth looking into.

Thanks very much for the info.

Was thinking they may bring a bit more depth to the mix, maybe a minor enhancement/separation to the midrange.  Not that the KT88's sound "bad", Just figure after 2 years maybe try something new.

Thanks for the tip.

Sorry, should have noted my location.  Things that are commonplace or at least available with a little effort in the US can be unobtanium here.  Or just incredibly expensive. Small markets.

Thanks for the tip on the KT-120 and KT-150, another case where bigger is not always better.

Will try to call Vintage Tube next week.

Found these locally,

A friend has Electro Harmonix and is happy, I've herad good things about the Gold Loin.

Recommendations?  All are similar prices, except the Golden Lion which are about twice the cost of the others.

Need to contact the shop for availability next week, everything is closed here until Tuesday.

12AU7 Ecc82 Electro Harmonix twin triode

12AU7 ECC82 Electro Harmonix gold pin

12AU7 ECC82 JJ Electronics twin triode

12AU7 Genalex Gold Lion gold pin Also known as B749 / ECC82

12AU7W Tung Sol twin triode

Thanks.  They only had 5 Gold Lions, so I bought two of them to test your "replace the front two with better ones" comment.  And a set of the ElectroHarmonix gold pins.  

Try a couple different configurations and see if there is noticeable tonal change, to me...