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

I know Ethannn and find him to be an honest audiophile. He has been to my house several years back and is an ardent tube roller. What he says about the mid range is exactly what I found and for those who love mid range any and all KT88's instead of the 6550 is the way to go BUT at the expense of deep bass. So pick your poison. How come Posbwp555 was unable to answer my question with all of his $20K in stockpiled NOS tubes.

Thank you Ethannnn, info very much appreciated. Guido

First listening tests with NOS Tung Sol 6550 Black Plate on board are very encouraging. After 10h of break in, I'm confident to say that my system never sounded better in the following areas:

1. Purity of tone
2. Resolution
3. HF extension and air
4. HF clarity and purity
5. Soundstage depth and image bloom
6. Musiacal Flow

Supprisingly, changes are rather dramatic and similar in character to an interconnect or a speaker cable change - unlike substituting 6H30 tubes with their DR alternatives, which brought only minor improvements (so far, I have only tried DR tubes in my Ref 110 power amp, but my guess is that the effect will be similar in Ref 3).

This is the best $400 I have spent on my system in a long time. I cannot recommend this change highly enough. If you really haven't heard the Ref 3 with a NOS 6550 tube on board - then you haven't heard what Ref 3 can do.

Thanks to Elberoth and Ethannnn for validating what any experienced tube roller figuered out a long time ago. PS tubes have a huge influence on the sound and the best NOS beats the best current production in a big way. I guess Guido and obgyn are better talkers than listeners. I stated and restated on this thread my limited experience with this preamp. The friend that sold his did bring it by for one day and I did hear it in my system. It is not a good value in my estimation as my $1200 Ming DA beat it in most parameters. From its sonic signature I am fairly certain that the NOS Tung Sols would be a huge improvemnt.
I can't speak to the GEC (never heard it). Ethannnn you should take Elberoth up on his offer to audition the TS.
If you are falling short in the bass with the GEC, the TS should remedy this without any loss of midrange magic. I don't have time to argue with obgyn or guido any longer and it is obviouis to me I will not learn much from them (that is the reason I visit these forums). Don't take my lack of response to your inane attacks as evidence of anything other than I don't have time to waste on it.

Bart

"inane attacks"

Huh? did I? Guido not a listener? Truly? [now scratching head furiously] and how else would I evaluate equipment. . . by looking at it mayhaps? ]chuckles]