ARC Ref 3: Tung-Sol 6550 in power supply?

Elberoth,

The PS tubes have a dramatic imfluence on the sound. I agree with you about the 6H30, it is a shame it was used.
ARC has produced a well balanced sound with it though. I don't know if I am correct or not Oneobgyn. I do not own the ARC (as previously stated). I heard it at a friends house and compared it to my Ming DA (as previously stated).
We were going to swap pres for a month but he decided to sell his ARC and it sold as soon as he posted it. I guess
you haven't really rolled "them all" or you would have stated which ones you tried. If you think the sound you have with the stock tubes is as good as it can be, then don't try anything else. You should not discourage others from experimenting. It is the people that try things that advance the hobby. You should also bear in mind that because you in your system with yours ears think that rolling tubes in this pre is pointless, others with different systems and tastes may conclude otherwise.
By the way, what 20,000 hour tubes are you using? That is laughable.

Bart

Bart, if you have some experience with tube rolling for Ref 3 that we have not covered yet, please enlighten us. G. Ref 3

"Bart, if you have some experience with tube rolling for Ref 3 that we have not covered yet, please enlighten us"

The short answer is that he can't

He can't even answer me whether he has tried a KT88 instead of the 6550

I would like to make it clear once again that I would never discourage tube rolling. I merely said that when all was said and done it seems that those of us who own the Ref3 (he doesn't) come back to the stock 6550C. I have also stated that tube rolling will produce a "different" sound but not always a "better" sound and that is what we leave to our ears, judgment and most of all experience

OK guys, I have already installed NOS Tung Sol in the PS of my Ref 3. Now I'm wondering, how much time I should allow for burn-in (this is a brand new tube) ?

Elberoth2, I would give the Tungsol a couple hundred hours of playing time at various gain levels to stabilize. G.