Really? Clocks are crystal structures that oscillate/vibrate at their target/designed frequencies only when brought to the proper temperature. It's called stabilization for a reason. If the temperature is to low or to high the crystal will not vibrate at the proper frequency and timing may be off as a result. It's not just common wisdom and is accurate, it's the law of physics that can be tested and repeated!
+1, and at the risk of sounding like I'm defending LH Labs or their shipment of defective Pulse DACs (I'm certainly not),
every single DAC I've owned beginning with the circa 1993 Altis 'Lil Bit, has sounded it's best not just after hours of being powered on, but
days of being powered on.
Most DACs don't even have an on/off switch, and there is a reason for that, they are meant to be left on at all times.
Not seeking any kind of of thread war, nor providing any excuses for the poor QC of the Pulse DAC, but what I've said above and the post by
@germay0653 aren't wild conjecture open for huge debate. Rather, they are facts.
We pretty much all say this over and over. It is all about perception. There are no facts, there is only consensus. The way we hear things is determined by our brains and what we perceive as reality. This is not conjecture or opinion, but statistically (really) proven by numerous studies
I have seen it over and over again in the 10 years plus that I have been around these forums. A few people say that they hear something. then it becomes a "proven: fact. It is not a fact, it is a widely shared opinion. Just possibly because we want to hear what we are told that we should hear. None of us can escape the power of suggestion when we want to be part of the cognoscenti. It is even harder when people are put down when they express diverging opinions and are slighted (or worse) for disagreeing.
That is all quite fine, it is part of the human condition, but it does not constitute any level of any definition of the term "proof".
When I say highly doubtful, I can only say that from my perspective. I know the specs of the clocks. I know that the variability should not be significant to the audio output of the device. I do not hear a difference. It is not because of my audio acuity nor my ability to perceive nuances in sound. It is because I do not expect there to be a difference.
Guys, I have been here for a long time, I have been listening to music critically with significant training longer than a lot of you. I certainly do not seek to be considered a guru on any level. I do ask that my thoughts are accepted, even if not agreed with.
So what, well I am not sure why it is not accepted that in my perception, from my point of view, the reported results are doubtful at best. To me they are extremely doubtful.... I stop at saying BS, only to not get flamed any further. So what? I don't mean to threaten anyone's established conceptions. If you are not threatened by my thoughts, this will not hut your feelings. Please don't let it, nor let it trigger the "fight or flight" reaction!
SO I have electronic performance date and circuit performance analyses ...and what I hear on my side of the discussion. Many others have the "common wisdom" on their side. Who is
right I can't say
If I try to change you mind on this.I will lose that one every time. That is not may intention. Please don't feel threatened by someone disagreeing with you. I have a different view and my brain hears things differently from yours. I am also an engineer who understands The give and take of audio circuit design. This is not a subjectivist versus objectivist discussion. I buy into both. When the real physics and rules of electronic devices performance disagree, I question them. You might also... or not.
I agree that there are changes in component performance with temperature. Usually small changes, but nonetheless changes. I don't think that high performance "nano" clocks such at the Crystek clocks change enough to make any audible difference. If there is a difference it would more likely be attributable to changes in passive components. Resistors, capacitors, even ICs change values with temperature, this is well documented. Nano clocks with specs this tight, simply do not... unless they are defective. That being said, once thermal equilibrium is reached in the device (stabilization of the temperatures INSIDE all of the components), this can not make the circuit performance change. I believe, due to infrared measurements on many circuits, with stable ambient temperature, will occur within an hour. It seems real strange that it would take two weeks... ?
I also think that looking at electronic circuit performance that is well documented is worth considering in these conversations. If there are changes in sound over time, it is much more likely to come from passive components changing with time and temperature than it is from changes in high precision crystal oscillators changing with time.
In the end it really doesn't matter. You hear what you hear I hear what I hear... just don't. please, feel thereatened when somone doesn't buy into you personal perception. I don't think you are wrong, please don't judge me ... or put me down based on the fact I think differently.
That is what I think. I truly hope my thoughts are not threatening enough to people to make them upset. They are simply my thoughts. Aren't everyone's thoughts welcome here?
You hear what you hear, I hear what I hear. I am backed up by electronics circuit performance data, "you" (indefinite "you") are backed up by "common wisdom" .
I don't claim to be right, nor "you" wrong. I think I have a point of view worth considering...
