This posting has been here awhile and I just noticed it. Thanks for posting such a good article about 6SN7 history. I thought I'd read them all.And just a little history on the 6SN7 vacuum tube, this is a good little read...
The Best General Purpose Dual Triode
This posting has been here awhile and I just noticed it. Thanks for posting such a good article about 6SN7 history. I thought I'd read them all.
Since you like the 6F8G tubes you should try the 6J5 Gt tubes, I used the 6F8G tubes for years until I came across the the 6J5 tubes.If I could do things all over again, I would purchase a set of 6F8G to 6SN7 adaptors off eBay, and purchase Tung Sol Black Glass Round Plate 6F8Gs. These are the equivalent of the Holy Grail Tung Sol Black Glass Round Plate (BGRP) 6SN7s, which I own. Difference is the adaptor is ~$15 and the 6F8G can be had for ~$180, whereas the 6SN7s are upwards of $300 and usually not NOS, and typically have hairline cracks in their bases, and also, reportedly by many, have a smaller soundstage and image size.
Since discovering that the 6F8G is a 6SN7 equivalent, I have purchased the National Union 6F8G Round Plates, and in my system are the equal of my Sylvania Bad Boy 6SN7s, but not as good as the Tung Sol BGRP. I plan on replacing my current BGRP 6SN7s with 6F8Gs for less than half the cost of 6SN7s when they die.
TLDR: Don't be hesitant to try other electrically equivalent variants, which are cheaper, and potentially better sounding.
Truly sorry about this late reply but, you were correct I tried the 6J5 tubes and they are by far better sounding than anything else I have ever tried in my system.Since you like the 6F8G tubes you should try the 6J5 Gt tubes, I used the 6F8G tubes for years until I came across the the 6J5 tubes.
You will need the adapters and a quad of 6J5 tubes each tube is a single 6SN7 in it's own glass. These tubes bested every other tube I have tried in my system for the last 15 years!!!
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