Are these 6V6s any good . . .?

traynor_garnet

Silver Supporting Member
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3,025
Sylvania 6V6GT made in USSR. The bottom plastic part is black and the glass tube is almost all black but clear on the top and right around the bottom.

I have no reason to believe these are anything special, but are they crap? I've been thinking of getting some NOS 6V6s but wasn't sure if I would hear much of a difference.

Steve
 

TheAmpNerd

Member
Messages
1,056
Beats me.

However, lots of folks who I respect
are really impressed with the JJ 6V6.
I have a few but haven't stuck them
in anything yet.


I haven't tried them myself as I'm still
using my "Sperry" (Mil RCA 6V6).


Hmmm, I'm rebuilding a warn out
BF Deluxe Reverb also and actually
that might be just the ticket
to try them in.

Either that, or I'm sticking them in
this other old beater Dual Showman
Reverb Combo that I'm rebuilding.

It has a nice JBL 15. Figure with the
6V6s it might be kinda fun. Not
so clean as the 7581As and get
plenty of output tube crunch.

Yes, I'm changing the output
iron to a Mercury Magnetics
spec tranny for 4 x 6V6s.
 

Blue Strat

Member
Messages
30,194
Originally posted by steve cole
Sylvania 6V6GT made in USSR. The bottom plastic part is black and the glass tube is almost all black but clear on the top and right around the bottom.

I have no reason to believe these are anything special, but are they crap? I've been thinking of getting some NOS 6V6s but wasn't sure if I would hear much of a difference.

Steve
Those are the $5 a pop Sovtek 6V6GTs. I've seen them relabeled in many different (fraudulent) ways but this is the first time I've heard of them with the Sylvania label.

If they survive the first 5 minutes in an amp they'll usually work ok.
 

traynor_garnet

Silver Supporting Member
Messages
3,025
Originally posted by TheAmpNerd


However, lots of folks who I respect
are really impressed with the JJ 6V6.
I have a few but haven't stuck them
in anything yet.

I haven't tried them myself as I'm still
using my "Sperry" (Mil RCA 6V6).

Yeah, several people have told me that the JJ 6V6 is the only "real" option for new production 6V6s. $25 for a matched pair seems pretty good, but maybe NOS is better in the long run???

Steve
 

traynor_garnet

Silver Supporting Member
Messages
3,025
Originally posted by Blue Strat
Those are the $5 a pop Sovtek 6V6GTs. I've seen them relabeled in many different (fraudulent) ways but this is the first time I've heard of them with the Sylvania label.

If they survive the first 5 minutes in an amp they'll usually work ok.
Yeah, I didn't really think they were anything really special. I cannot evern remember where I got them from. They were certainly better than the Russian Phillips tubes (made in 1990) that came in my amp.

I'm looking to retube the Garnet Lil Rock combo I just bought. It's basically a Tweed Deluxe circuit. Any recommendations?

Steve
 

Blue Strat

Member
Messages
30,194
Originally posted by steve cole
Yeah, I didn't really think they were anything really special. I cannot evern remember where I got them from. They were certainly better than the Russian Phillips tubes (made in 1990) that came in my amp.

I'm looking to retube the Garnet Lil Rock combo I just bought. It's basically a Tweed Deluxe circuit. Any recommendations?

Steve
In reality, they're probably identical to the Russian "Philips" tubes. If they look the same, they're the same tubes.

Marconi 6V6Gs are killer in tweed style amps.
 

traynor_garnet

Silver Supporting Member
Messages
3,025
Originally posted by Blue Strat
In reality, they're probably identical to the Russian "Philips" tubes. If they look the same, they're the same tubes.

Marconi 6V6Gs are killer in tweed style amps.
The Phillips don't look the same . . . at least in terms of cosmetics.

It's funny that you mention Marconi 6V6s because the amp came with a Marconi 12ax7 in it (made in Japan)!

I was eyeing those Brimar 6V6GTY's you have. How do they compare to the Marconis?
 

Blue Strat

Member
Messages
30,194
Originally posted by steve cole
The Phillips don't look the same . . . at least in terms of cosmetics.

It's funny that you mention Marconi 6V6s because the amp came with a Marconi 12ax7 in it (made in Japan)!

I was eyeing those Brimar 6V6GTY's you have. How do they compare to the Marconis?
Every Marconi I've seen was made in Canada. Interesting note on the Japanese tube.

The Brimar GTYs are great but a little darker than the Marconis. Since most tweed amps tend to be a little dark, the Marconis often help cut through a bit more.

If you have other questions about tube selection please feel free to email me directly, you'll probably get a faster response.
 

Euthymia

Member
Messages
25
My fave current production 6V6 is the Electro-Harmonix 6V6EH.

NOT the same thing as the Sovtek "black Russians."

I tried a pair of the JJ's in an old Princeton Reverb and thought that they sounded like 6L6's. Not a bad thing if you like that....and JJ claims (and experiments confirm) that their 6V6's can take Fender roasty-toasty plate voltages better than most.
 

TheAmpNerd

Member
Messages
1,056
The great thing about tubes is you can change them
simply.

Try doing that with transistors on a circuit board.
 

Swarty

Member
Messages
1,131
Originally posted by steve cole
Sylvania 6V6GT made in USSR. The bottom plastic part is black and the glass tube is almost all black but clear on the top and right around the bottom.

I have no reason to believe these are anything special, but are they crap? I've been thinking of getting some NOS 6V6s but wasn't sure if I would hear much of a difference.

Steve
I'm guessing, as several others have, that these are the el cheapo Reflektor variety (Sovtec) that 10 years ago, were the only current production 6V6 available. I've seen many have internal fireworks displays in Princetons and Deluxe Reverbs. GT would not use them, they used the cheapo Reflektor 6L6 as their 6V6HD and provided biasing instructions with it. I've had reliability problems w/ EH 6V6s, and the screens really glow when you lean into them. I find the JJs to be outstanding.
 

traynor_garnet

Silver Supporting Member
Messages
3,025
Originally posted by Swarty
I'm guessing, as several others have, that these are the el cheapo Reflektor variety (Sovtec) that 10 years ago, were the only current production 6V6 available. [snip] I find the JJs to be outstanding.
My real dilema is if I should just buy JJ 6v6s or shell out a bit extra for NOS tubes.

Have you directly compared JJs and NOS?

Thanks
Steve
 

Swarty

Member
Messages
1,131
JJ or NOS is a tough call. When the choice was those black things or NOS at $20 per pair, it was a no-brainer... but now NOS have skyrocketted and JJs are extremely good IMO. Unless you are talking about Tungsols or RCA at affordable prices, I'd probably go JJ. As for a direct comparison, the JJ is rather stout sounding compared to most other 6V6s, including NOS, which is a mark of quality IMO.
 

traynor_garnet

Silver Supporting Member
Messages
3,025
Originally posted by Swarty
JJ or NOS is a tough call. NOS have skyrocketted and JJs are extremely good IMO. Unless you are talking about Tungsols or RCA at affordable prices, I'd probably go JJ. As for a direct comparison, the JJ is rather stout sounding compared to most other 6V6s, including NOS, which is a mark of quality IMO.
Well, not excatly NOS but I just pulled the trigger on these:

RCA 6V6s

Not sure how I did; I know they are not the famous "black plates" but I've been told these are good too. Oh well, it will be a learning experience if nothing else . . . :)

Steve
 




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