[Strat-Mangler]

Has anybody compared Sylvania 3-hole Bad Boys from 1952 to other years? From what I've read, they were only made during 1950-1953 so I'm wondering if there is any difference in sound from 1952 to the other years.

 

[Makiah S]

I found them to be punchier than other years and other models, so the expected dry'r spacious sound but with a bit more "umph"

 

[mourip]

Got them "Russian re-brands" today ,best way to describe them ,they sound similar to one of my favorites - 1950 Raytheon 6sn7gt (pictured ) just improved in all directions ..,forward-full mids,in your face vocals ,cleaner top and detailed low end ,I have more then few 6SN7 but this one takes the cake
Bought quad for electrostatic tube amp so it will be hard to keep away from them,good deal

Glad to hear this. All that matters is that you enjoy them.

 

[Nik74]

Anyone here have experience with the CBS Hytron 6SN7? I m thinking of them as a b day present to myself, they are expensive though so wonder what others here think of them . I m reading they have an exceptional soundstage so i wonder what the 800S would sound with them

 

[abvolt]

I had a pair of them when I was using 6sn7s with my wa22 they were excellent sounding but I don't remember them being too pricey nothing like the ecc35's I now use..enjoy

 

[Nik74]

Thanks for that. The ones I have found are around £250 a pair... Can ECC35 be used in the place of 6SN7?

 

[whirlwind]

Thanks for that. The ones I have found are around £250 a pair... Can ECC35 be used in the place of 6SN7?

Yes

 

[TheSnafu]

Thanks to all writers here, very helpful

What kind of lifespan you guys have gotten with 6SN7's ? How it behaves when it's going bad, just fades away or POP

I swapped my pre- and poweramps 12AU7's and 6922's to 6SN7's (both TungSol 6SN7GTB with adapters) and it was way bigger improvement than swapping to better 12AU7's or 6922's has been before.

cheers

 

[attmci]

Anyone here have experience with the CBS Hytron 6SN7? I m thinking of them as a b day present to myself, they are expensive though so wonder what others here think of them . I m reading they have an exceptional soundstage so i wonder what the 800S would sound with them

Can you use ECC33? So many great tubes in UK/EU.

 

[abvolt]

Thanks for that. The ones I have found are around £250 a pair... Can ECC35 be used in the place of 6SN7?

That seems a little high to me I think I paid like 80 or 90 for the pair but that was also 4 or 5 years ago. I know tube prices are only going up, if they are from a very reputable person then go for it, they do have a very nice sq, the ecc35 & 33's will work well but are much higher priced maybe 200 to 250 each, I love tube rolling..enjoy

 

[attmci]

Yes

It depends.

 

[Hazi59]

I need help identifying these 6h8c tubes. My brother in law gave these to me as a gift, but I want to know as much information about these as I can get. Any help from a savvy tube veteran would be greatly appreciated!

 

[abvolt]

looks like an early Russian maybe the 1960's same as the 6sn7gt I've never tried a Russian tube in my wa22 some members have had very bad results with them, I don't know more then that I'm sure it's on the woo amp thread..

 

[ilikepooters]

I need help identifying these 6h8c tubes. My brother in law gave these to me as a gift, but I want to know as much information about these as I can get. Any help from a savvy tube veteran would be greatly appreciated!

Those are Nevz (Novosibirsk factory) can tell by the Pentagon logo if both tubes have it.

 

[Oskari]

Those are Nevz (Novosibirsk factory) can tell by the Pentagon logo if both tubes have it.

Yep, and that's a month-year date below the type code.