Why are digital streaming equipment manufacturers refusing to answer me?


I have performed double blind tests with the most highly regarded brands of streamers and some hifi switches. None have made any difference to my system on files saved locally. I have asked the following question to the makers of such systems and almost all have responded with marketing nonsense. 
My system uses fiber optic cables. These go all the way to the dac (MSB). Thus no emi or rfi is arriving at the dac. On top of this, MSB allows me to check if I receive bit perfection files or not. I do. 
So I claim that: if your dac receives a bit perfect signal and it is connected via fiber optic, anything prior to the conversion to fiber optic (streamers, switches, their power supplies, cables etc) make absolutely no difference. Your signal can’t be improved by any of these expensive pieces of equipment. 
If anyone can help explain why this is incorrect I would greatly appreciate it. Dac makers mostly agree, makers of streamers have told me scientific things such as “our other customers can hear the difference” (after extensive double blind testing has resulted to no difference being perceived) and my favorite “bit perfect doesn’t exist, when you hear our equipment tou forget about electronics and love the music”!
mihalis
Why is the troll refusing to answer us? Crawled back into his cave I suspect.
"...after they banned all your previous fake accounts,"

How does one make a fake account here? Are electroslacker and mapman real names? (nothing personal, those are just two most recent ones above so I picked them)

At least thyname is undisputably a name.
Glupson my man. My username is all there to see. Since 2004 or thereabouts. With all trading history here. And my actual gear under “system”. Let me know what else I can do for you.

A fake account (for like at least five times that I know of, maybe more) like our genius here goes something like this:

1) Create an account here. Post your hatred towards members, get kicked out (and rightly so)

2) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

3) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

4) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

5) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

6) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

7) Use another email address to sign up under a different username, as the original one was already taken. Post same venom. Get kicked out again.

8) Repeat

@kijanki ,

Unless I am mistaken (definitely could be), as the op was talking about networking connections, I believe he means fiber optic network I/F not fiber optic SPDIF. As well MSB offer fiber optic isolated USB I/F.


TOSLINK is typically slow, the ST based fiber optics interfaces are much faster. Of course it is possible to create fiber optic interfaces as fast or faster than electrical I/F because of the lack of interference.