Darkvoice 336i & 336SE Tuberolling PartII
Oct 12, 2022 at 4:59 AM Post #13,756 of 14,543
If you can find some Hytron 7A4's, grab them. My favorite 7A4 to date. Note the ones I have are Hytron labeled only, not CBS/Hytron. Assuming they are earlier versions that were made before CBS got involved with Hytron. Of course, they could be Sylvanias for all I know (but they sound quite a bit better than the Sylvania labeled ones I have).


7A4 Hytron A.jpg
Worth a try if you say so 🙂
 
Nov 11, 2022 at 6:06 PM Post #13,757 of 14,543
Hey First Real Post here... Glad to finally be on headfi! Hope to contribute going forward...

I have been tube rolling since i picked up a pair of ZMF Eikon's a few weeks ago. (Upgrading from HD650s... ya big leap...)

I have the pre-out disconnect mod + cap bias mod on my 336SE. Up until today my favorite combo was the brown base tungsol 6SN7WGTA with my Western Electric 421A.

I decided to pull out some old vintage tubes and adapters and go through some 6J5 sets (some of which sounded great BTW) and others... Then i got to this Emerson smoked 6F8G. I bought this tube so many years ago i dont really recall where it came from or why i bought it...

oohOjGN.jpg


sR7tur8.jpg


bXHLiOY.jpg


But this combo has impressive detail and clarity that does not compare to the 6SN7s i have!

Has anyone else experienced this with the 6F8 family and this amp?

-tubeSound
 
Nov 11, 2022 at 6:51 PM Post #13,758 of 14,543
Hey First Real Post here... Glad to finally be on headfi! Hope to contribute going forward...

I have been tube rolling since i picked up a pair of ZMF Eikon's a few weeks ago. (Upgrading from HD650s... ya big leap...)

I have the pre-out disconnect mod + cap bias mod on my 336SE. Up until today my favorite combo was the brown base tungsol 6SN7WGTA with my Western Electric 421A.

I decided to pull out some old vintage tubes and adapters and go through some 6J5 sets (some of which sounded great BTW) and others... Then i got to this Emerson smoked 6F8G. I bought this tube so many years ago i dont really recall where it came from or why i bought it...

oohOjGN.jpg


sR7tur8.jpg


bXHLiOY.jpg


But this combo has impressive detail and clarity that does not compare to the 6SN7s i have!

Has anyone else experienced this with the 6F8 family and this amp?

-tubeSound
That there is an RCA...and yeah, they sound pretty good.
PXL_20221112_000032275.PORTRAIT.jpg
 
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Nov 11, 2022 at 9:52 PM Post #13,759 of 14,543
But this combo has impressive detail and clarity that does not compare to the 6SN7s i have!

Has anyone else experienced this with the 6F8 family and this amp?

-tubeSound

You would be extremely pressed to find 6SN7s that come close to what a 6F8G/6C8G can do in my opinion at least in the DV. I'm sure the 6F8G/WE421A is a nice pairing.
 
Nov 13, 2022 at 8:55 AM Post #13,760 of 14,543
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Nov 13, 2022 at 11:48 AM Post #13,761 of 14,543
That there is an RCA...and yeah, they sound pretty good.
PXL_20221112_000032275.PORTRAIT.jpg
Agree. And if you can find a TungSol with round plates, the doors to heaven swing wide open. Unfortunately those are getting very scarce and prohibitively pricey.
 
Nov 14, 2022 at 9:12 AM Post #13,762 of 14,543
A GEC 6as7g with GEC L63 also opens the heavens for angels to whisper in your ear.

A valve combination worthy of a final game.

WhatsApp Image 2022-11-14 at 11.08.22.jpeg
 
Nov 14, 2022 at 9:53 AM Post #13,763 of 14,543
A GEC 6as7g with GEC L63 also opens the heavens for angels to whisper in your ear.
Agree. And if you can find a TungSol with round plates, the doors to heaven swing wide open. Unfortunately those are getting very scarce and prohibitively pricey.

OK - so we got pairings that open the heavenly gates, and have angels whispering. What will it take to bathe in the light and get drunk on divine wine at God's house party?
 
Nov 14, 2022 at 9:58 AM Post #13,764 of 14,543
OK - so we got pairings that open the heavenly gates, and have angels whispering. What will it take to bathe in the light and get drunk on divine wine at God's house party?

Hence we have numerous beliefs my friend. Choose the one you like best. LOL.
 
Nov 14, 2022 at 10:06 AM Post #13,765 of 14,543
Hence we have numerous beliefs my friend. Choose the one you like best. LOL.
I think the GEC 6AS7G is one of the rare tubes I have not had the pleasure of hearing. You like that better with those GEC L63s over the 5998/421A?
 
Nov 14, 2022 at 10:25 AM Post #13,766 of 14,543
I think the GEC 6AS7G is one of the rare tubes I have not had the pleasure of hearing. You like that better with those GEC L63s over the 5998/421A?

I didn't really like the combination of the Chatham/TS 5998 with the GEC L63.

I much prefer the TS 6f8g, Melz 1578 and even Foton with 5998.

Now with the GEC 6as7g the combination is perfect. Huge stage, lots of air, emotional connection with the music, no grains, bass and treble quite extended, perfect separation and very sweet vocals. A very soft and pleasant sound. It is difficult to evaluate negatively in any aspect. Perhaps the dynamics and holography is a little lower than a 5998/Foton, for example.



Anyway, I like both a 5998/Foton and the GEC 6as7g/GEC L63, each in its own way, the two combinations deliver top notch sound.
 
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Nov 14, 2022 at 11:34 AM Post #13,767 of 14,543
Unfortunately those are getting very scarce and prohibitively pricey.

Indeed and in time many affordable tubes may significantly go up as well. Of course unless one is into tubes from the current production, that's a different story :)
 
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Nov 14, 2022 at 8:48 PM Post #13,768 of 14,543
Indeed and in time many affordable tubes may significantly go up as well. Of course unless one is into tubes from the current production, that's a different story :)
Very true. But some of the current production tubes actually sound pretty good. KR's are nice as are some of the PSVanes, and some of the old name brands that were resurrected and currently made in Russia (or at least were being made) are decent. Not at NOS caliber IMO, but a far cry from the utter sludge that was being produced there (and in China) in the '80's through early '00's.
 
Nov 14, 2022 at 8:52 PM Post #13,769 of 14,543
OK - so we got pairings that open the heavenly gates, and have angels whispering. What will it take to bathe in the light and get drunk on divine wine at God's house party?
0DCD24A8-CC31-4C7A-AB1F-1BF02CB7048B.jpeg
 
Nov 14, 2022 at 8:52 PM Post #13,770 of 14,543
OK - so we got pairings that open the heavenly gates, and have angels whispering. What will it take to bathe in the light and get drunk on divine wine at God's house party?
The last time angels whispered in my ear it was the lyrics to a Marilyn Manson song. Of course, the locks on the gates of heaven will surely be reinforced when my time draws near, so this is a YMMV kinda thing. 🤣
 

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