So I guess there is no true DIYer nor Audiophile here that will try, explore and experiment yourself different ways of improving sound and just blinding think that all of this is a myth.
Anyway to close this thread?
Yes, there is a way to close threads. I won't do it yet, though.
First, I use plain old 60/40. Usually Kester, but I haven't found a 60/40 I didn't like.
I've experimented with a variety of solders. Hated pretty much everything but 60/40. Weird melting temperatures, difficulty making joints, and much else.
The entire point of a solder joint is to make a physical connection. A good connection with 60/40 will sound better than some mystical solder made of precious metals mined from a sacred mountain, plunged into liquid nitrogen and bathed in the tears of a virgin monk.
If you can get a good physical connection from the mystical stuff, then it will sound exactly the same as any other good physical connection.
But my experience is that you can get good physical connections from 60/40 easier than with anything else. So using 60/40 makes the most sense. It is easy to work and affordable.
By the way, Google "tin whiskers." You'll notice that 60/40 doesn't have that problem.
Also, I'm concerned that you're operating from the false assumption that everything has to sound different. As much research and many listening tests have demonstrated, there's often no difference whatsoever between some audio components. Solder is one of those.
Of course, the people
selling you that stuff make all sorts of claims. But that's like a car salesman telling you that a new car will make you taller, thinner and better looking.