Shootout of Nos 6sn7 tubes

I heard that all old Russian tubes are prone to noise and the only way out is to do re soldering.

I recommend you to contact person with ID of " Paladin79 "in Headfi to learn how to do it.

https://www.head-fi.org/threads/the-reference-6sn7-thread.117677/page-141#post-15715112

I was pretty good at soldering, but over the years my vision has deteriorated. Plus this is not a task I would want to do.

I think soldering would only make sense if doing pairs of tubes. I went back a few pages on the Head-Fi link and he was soldering all his Melz tubes.
It would be great if somebody in our hobby who loves tubes was offering this service.

I must say that my system sounds the best ever. I have a pair of 1578's in the front of my Atma-sphere gain stage, Sylvania oblique plate GTA's in the 2nd gain position, and Sylvania GTB's as the drivers. Music is transparent and realistic with high and low extension. And best of all is the 3D image which extends back into the wall and out in front of the speakers. I think this is possible due to having 2 different pairs of 6SN7's in the gain stage.

MA1s? @low

S-30 3.3 with V-Caps.

I just did the soldering trick on a pair my Melz 1578 one tube would make some cracklings noise once in a while. During warm up. .3 hrs in not a peep. It took me about 10 minutes to do the pair..