[r one]

Someone knows How much was sold a tube like a 6sn7 bgrp during 40's or 50's ?

 

[jamato8]

I personally found the two to sound almost identical as well. If anything, I slightly preferred the 6F8G Rp. Both super excellent.

I have the choice of the 6SN7 TS RP or the 6F8G RP and use the 6F8G because it is great and less money so the 6SN7 wait in reserve. In the micro Zotl 2 the 6F8G do a great job. 

 

[larcenasb]

 
Even the boxes of some of the USN TS RP were beautiful. I have a pair of NOS and the box is a thick cardboard with heavy print in a nice blue wide print. The boxes are like new and don't break down like some older cardboard so I assume they are even acid free. I have a few sets of RP and they are nice. Too bad they got so expensive but they are getting harder to find. I think I paid 5 dollars each for my NOS, but that was a few years ago. 

Oh wow, I'm so jealous! Congrats on that find. I'll keep searching for my favorable-chance bargain. Enjoy those gems!

 

[r one]

I have the choice of the 6SN7 TS RP or the 6F8G RP and use the 6F8G because it is great and less money so the 6SN7 wait in reserve. In the micro Zotl 2 the 6F8G do a great job. 

I have both too. In my amp 6sn7 is better for dynamic and deeper in low range. 6F8G is fantastic too, very close to 6sn7 but not exactly the same to me. But my 6f8g rp are true nos and not broken yet, i have just test my pair.

 

[jamato8]

I have both too. In my amp 6sn7 is better for dynamic and deeper in low range. 6F8G is fantastic too, very close to 6sn7 but not exactly the same to me. But my 6f8g rp are true nos and not broken yet, i have just test my pair.

They need burn in to shine. I think the TS RP and the 6F8G are very close. I think the 6F8G might have a bit more resolution and the TS RP 6SN7 a little smoother sounding (these are differences that are very small). 

 

[r one]

More resolution than 6sn7 rp after break in ? That is interesting thing. I like resolution and dynamic. I am surprise because After a quick comparison, i felt that 6f8g was under 6sn7 for resolution and 3d imaging.

 

[jamato8]

More resolution than 6sn7 rp after break in ? That is interesting thing. I like resolution and dynamic. I am surprise because After a quick comparison, i felt that 6f8g was under 6sn7 for resolution and 3d imaging.

I would guess it depends upon the condition of each and the system. Tubes can be biased differently and run different voltages by a wide degree in different amps. There are many variables. 

 

[nykobing]

Someone knows How much was sold a tube like a 6sn7 bgrp during 40's or 50's ?

 
In 1943 a 6f8g seems to have cost 1.35 or about 18.67 now.
 
https://books.google.com/books?id=RwwEAAAAMBAJ&pg=PT74&lpg=PT74&dq=6f8g+1+dollar&source=bl&ots=XAYzWUEbI5&sig=Fe4GcBbAv1Te4ksgHrtcNapSPs8&hl=en&sa=X&ved=0ahUKEwiZwo3noI3NAhVYzWMKHSpkAsIQ6AEISjAG#v=onepage&q=6f8g%201%20dollar&f=false
 
In 1951 a 6sn7 was 1.90 or about 17.48 now.
 
https://books.google.com/books?id=NB8EAAAAMBAJ&pg=PA85&lpg=PA85&dq=%22the+billboard%22++6sn7&source=bl&ots=cAjETtFskO&sig=T1Ibk25k7XJu-PM1BlsAdHMfsQw&hl=en&sa=X&ved=0ahUKEwi19MvHoY3NAhUCKWMKHch0C3YQ6AEIHDAA#v=onepage&q=%22the%20billboard%22%20%206sn7&f=false
 
I just looked at the ads for various tube prices in that magazine.

 

[r one]

Thank you so much for the links. I am history teacher and like this kind of stuffs.

 

[Rob N]

Sylvania metal base labelled as Mullard

 

[r one]

very rare ! i've never seen this ! Absolutely delicious.

 

[SonicTrance]

  very rare ! i've never seen this ! Absolutely delicious.

Me neither! The Sylvania 6SN7W is my favorite 6SN7, very nice!

 

[leftside]

I need two

 

[gibosi]

Yes, it is a great tube. And don't be afraid to buy one with a cracked base. (This is the tube in my avatar pic.) I initially put the green twist tie on as a temporary measure, but after more than a year, it appears that it might be a permanent fix. lol
 
 

 

[r one]

Excellent Gibosi ^_^