Conrard-Johnson CT5 tube rolling?

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

Pradeep,

Look forward to hearing your impressions!

Vance

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

Pradeep,

Sorry the new tubes weren't a bigger bang for you, but at least you now know you're cooking with a full tank of gas. I agree that the damping rings are a must.

Vhiner: Sorry for responding late as I didnt browse the forum on a regular basis.

Tube dampening: the original rings do a great job but Herbie's tube dampener add a bit more focus, at $10 a pop, they are worth a try

Tube rolling: the DR versions are indeed better in my CT-5 and did the job in an even more liquid midrange, which I was after, w/o rolling too much off in the highs as the stock version.

Thanks for the tip on the fuse! I will order some (also for my LP140 mono blocks)