Conrard-Johnson CT5 tube rolling?

Hi Vance
Replaced the stock Sovtek 6H30 in the CT 5 with a brand new pair of EH 6H30.Its the same tube except it has gold plated pins with makes for better contact. As for sonic differences its sooo miniscule, though I suspect the newer tubes have more clarity/air. What made a fairly dramatic difference was the use of the CJ supplied damper rings. Without there was grain and etchiness.
Many thanks to you and others on this thread for all your inputs/advise
Cheers
Pradeep

Hi Vhiner
Am curious about your comment that CJ service recommends changing the tubes in a CT5 after 1500 hrs. My CT 5 is 5+ yrs old with 3000+ hrs with the original tubes and it sounds sublime !
Am I missing something ?
Cheers
Pradeep

Vhiner
Many thanks. What's the best source for the 6H30 tube? Did you buy from CJ or online ? I think my tubes are fine for now but not sure for how long.
Cheers
Pradeep

Vance
Thanks. I had to replace a 6550 on my CJ LP 70S , power amp,a few years back and found online prices to be way cheaper. CJ doesn't manufacture the tubes and the mark up by the CJ dealer was absurd.
I have a pair of 6H30 on order and will swap them and report on the difference.
NJoy
Pradeep