Please take the smilies more seriously than the statement before them: that's why they are there. However, I'm sure you know how marketing works. Of course, we can all be subject to it when it comes to our favourite stuff, and of course that means me too: wanting to believe, especially where large sums of money are concerned. Oh how I wish I was more sensible when it comes to my own shopping (not just hifi)!
I'm sure that power supplies matter. As I said, some of them make too much physical noise, let alone anything else. I'm also sure that the outright statement, which one sees a lot of, that good sound cannot come out of a PC, because of the electrical noise, is just wrong. It's the sort of dogma that the hifi world loves, and nobody says that the engineers at Lynx, RME, even ESI, etc, might just have thought of that. The thing is, though, that although I'm against the dogma, I don't deny the possibility, and I don't see anything wrong with an external PC interface on the hey-why-not basis. Mine is.
So yes, there is a heap stuff that the hifi marketing departments want you to believe, and there is another heap of stuff which "audiophiles" like to put on computers because they want the machine to reflect them. It's just so nice to see a down-to-earth write-up from The Absolute Sound, instead of the words, "forget it: by a DAC."
And I have a Burson Conductor on my wish list. So is life black and white? No. Nor are my opinions/theories/practices. Or my sense of humour --- but often that doesn't work so well via the screen <Blush>.
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