6SN7 Tube Addicts
Jun 25, 2022 at 9:16 PM Post #7,351 of 7,413
If anyone is looking for a pair of Sylvania 6SN7GT 3 hole bad boys (date code 152) I've put up a listing on classifieds!
 
Jul 20, 2022 at 6:41 PM Post #7,352 of 7,413
Dropped this vt231 here’s internals
Last pic is my none broken one.
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Jul 21, 2022 at 3:10 PM Post #7,357 of 7,413
DF37EC21-10DE-4AF0-8294-BBBBDB6D4A5D.jpeg


I found this a while back when I was on my Melz hunt, but I think it's only specifics to real vs. fake 1578's...
 

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Jul 21, 2022 at 8:12 PM Post #7,358 of 7,413
DF37EC21-10DE-4AF0-8294-BBBBDB6D4A5D.jpeg

I found this a while back when I was on my Melz hunt, but I think it's only specifics to real vs. fake 1578's...
It is...that nice photo is from @Paladin79 and shows real vs. fake. He is also THE expert on Melz tubes.
 
Jul 21, 2022 at 8:58 PM Post #7,360 of 7,413
Although there are a few 6N8S's I've seen that have perforated plates, they are pretty rare and unusual. The great majority of 6N8S's have solid plates. OTOH, the great majority of 1578's have perforated plates, although there have been a few surface that have all the other characteristics of a 1578 but with solid plates. There is a pretty big difference between the 6N8S and the 1578 with the 1578 taking the honors sonically. Both listings you linked are for regular 6N8S's, and $130 for a single is WAY high. The other listing for a pair at $130 is more reasonable ($65/tube) and more in line with current market pricing.
 
Jul 24, 2022 at 9:47 AM Post #7,361 of 7,413
Dropped this vt231 here’s internals
Last pic is my none broken one.
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Wow- I bet it sounds much more open and airy now! Sorry, couldn't resist. Carry on.
 
Jul 30, 2022 at 9:50 AM Post #7,363 of 7,413
Gents- I was hoping for some guidance with my first 6sn7 purchase. I have a Bottlehead Crack Speedball and recently ordered the adapter for 9 pin 12au7 to 8 pin 6sn7 conversion.

Before going into the rabbit hole and amassing a healthy selection of tubes, I was thinking about one or two just to see if I can appreciate any differences over my current (already great sounding) RCA clear top 12au7. The guys on the BHC thread nearly unanimously agree there is a benefit in going to 6sn7 in the driver position of this amp.

Many guys have recommended Melz, although I see they are pricey and I don't really see any available in the US, and thus require some international purchase/shipping. On the other hand, the chrome top Sylvania (both black and brown base), Raytheon, Tung Sol, and RCA seem to be abundant. In my stash of tubes (lots of tubes for my guitar amps) I have a single lonely Sovtek 6sn7. This one does not get mentioned, ever, so I'm concluding it's not a desirable one for hifi use.

If you guys were to recommend one or two for my situation, what would you say? Thanks in advance.
 
Jul 30, 2022 at 11:26 AM Post #7,364 of 7,413
Gents- I was hoping for some guidance with my first 6sn7 purchase. I have a Bottlehead Crack Speedball and recently ordered the adapter for 9 pin 12au7 to 8 pin 6sn7 conversion.

Before going into the rabbit hole and amassing a healthy selection of tubes, I was thinking about one or two just to see if I can appreciate any differences over my current (already great sounding) RCA clear top 12au7. The guys on the BHC thread nearly unanimously agree there is a benefit in going to 6sn7 in the driver position of this amp.

Many guys have recommended Melz, although I see they are pricey and I don't really see any available in the US, and thus require some international purchase/shipping. On the other hand, the chrome top Sylvania (both black and brown base), Raytheon, Tung Sol, and RCA seem to be abundant. In my stash of tubes (lots of tubes for my guitar amps) I have a single lonely Sovtek 6sn7. This one does not get mentioned, ever, so I'm concluding it's not a desirable one for hifi use.

If you guys were to recommend one or two for my situation, what would you say? Thanks in advance.
Most of the really desirable NOS tubes are quite costly these days. I was going to suggest a smoke-glass KenRad -- they used to be reasonable priced, but they're up in the stratosphere now too.

If you're mostly wanting just to see how much difference you'll hear in your system, try a Foton. Still available for cheap but very nice sounding tubes (IMO), and will sound very different than the RCA clear top (a great sounding tube too I think). The ribbed plate versions (1955 and earlier, and partway into 1956) are the best, but any of the '57, '58, and '59 smooth plates are very close in overall sound quality. 1960 and later? Not so much.

The listing below is shipping from Bulgaria, so still overseas but without the current uncertainty of stuff shipping from Ukraine. Don't know that you'll find any of these (1950's anyway) shipping from a US seller.

https://www.ebay.com/itm/265803078732?hash=item3de3191c4c:g:u68AAOSwCFxi5CYh
 

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