You give the impression of being a general skeptic, "proof is in the pudding" type of individual. That's really fine by me, I just don't like being told something is bullshit that I believe to be otherwise, based on my own actual experiences, whether perceived or not. I don't think I'm alone in that respect. To each his own (opinion wise) is a good practice for me, and hopefully others, to abide by. I'm not trying to get preachy here or otherwise philosophical on anybody, just trying to explain things from my perspective.
I've had a Sabaj D5 DAC + headphone amplifier in my audio arsenal for a while now, at the moment it's boxed up while I figure out some things like equipment evaluations, placements, etc. There's a couple of curious things about that DAC that I'm sure have a simple scientific explanation. The first one is the mfg recommends a ten or twenty minute (can't remember exactly which) warm-up period before listening. I think when Amir reviewed it, he mentioned something about it also. I've heard of that obligatory warm-up procedure with tubes but not solid states. The other thing is when I use my 10 AWG power cord it runs cool. When I use an 18 or 16 AWG cord, it's runs at least 3 to maybe 5 degrees warmer. You wouldn't think a power cord's AWG would cause a DAC to fluctuate it's operating temperature like that, would you?
