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6922 recommendations for ARC PH7

Hi folks,

Looking to roll the tubes in my Audio Research PH7 phono pre. Looking for a recommendation for a 6299 that will extend the top end, midrange and give me a little more airiness without sacrificing the bottom end (Sorta what we are all looking for right lol) 

the  tubes I’m currently using are 4 Electro-Harmonix which sound good but they are a little laid back on the top. Very neutral sound which is a good thing, but want to try something new. My main room is not a very lively room as it is. However after testing the ARC in my living room system which is much more lively room I still am not getting the result I’m after. Dont get me wrong. Not complaining about the sound of the pre at all. I have been wanting to roll the tubes in this piece for some time now if not more than to just experiment with. Just got the itch to try something new. 
Thanks 

-Keith
barnettk

Showing 3 responses by terry9

terry9
2,354 posts
 
Good luck!!! Quietest, most musical tubes I ever used in my ARC.
terry9
2,354 posts
 
Back in the day, when the 6922 was in flower, there was an electronics company that made the best equipment in the world, by a long shot. That was Hewlett Packard, making the test equipment that put the men on the moon.

To run the very best test equipment required the quietest, most linear tubes obtainable. H/P did this by selecting tubes from manufacturers like Amperex and Telefunken, and charging the earth for their selected tubes. Stories back in the day told of co-op students testing a box of 144 tubes like Amperex SQ 6922's, putting the H/P stencil on 3 or so, and putting the rest in the dumpster.

But no-one remembers these stories now, or why they were credible. Bottom line is this: H/P branded tubes command no premium, in spite of being the best in the world, period. The very best were selected by Telefunken for H/P to H/P standards.

I have a sleeve of them, three still with the original Telefunken AND H/P seals. And you can't have 'em.
terry9
2,354 posts
 
@barnettk  

H/P - what a legacy. Most of my test equipment is H/P from the 70's and 80's; lovely feel, there's a sensual component to using equipment that good. One of my colleagues put it best after the V-P personally blew up a prototype, saying, "Now I understand why Boeing uses H/P. They want to be in business next year."

Don't know if I'd ever part with those 6922's though. I think I got the last sleeve from the early sixties, must have been 20 years ago, cost me $100 a piece back then.
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