Debate: Class D amps need 48 hours of warmup

Excellent. Thanks Ralph. I just want to say, love this setup. Using with Atma-Sphere MP-3. 

Now I am feeling guilty.  I used to be a Principal Systems Engineer working for Australia's largest company, but in reality I was a self-taught software guy with un-related degrees in physics and metallurgy.

Software development really only matured into a real discipline half-way through my career.  Even today, most software is developed using a debugging tool - the underlying expectation is that it will be wrong.

Honestly you guys are far too kind.

Having an engineering degree doesn’t entitle its bearer to demand others list their credentials just because they had the audacity to use the word "engineering" in a totally unrelated context / field.

That’s pretty minor as bullying goes, but bullying is not OK, here or elsewhere.

At least @mitch2 proves that not all licensed engineers are humorless 😄

@oldnslo  : 

Serious and not intended to be inflammatory question:  do the electronics on NASA missions require hours or days of warmup for optimum performance?  Does anyone know? 

Sometimes! The optics and electronics on the James Webb Space Telescope took weeks before they could even begin to calibrate them. 

As with most of this audio stuff, the hierarchy goes:

• Does it have an effect?
• Can you measure it?
• Can you hear it?
• Does it affect your enjoyment?

Many here believe, "everything matters," and it probably does, but not everything that has a physical effect can be discernably measured or heard and, even things that can be measured and heard may not meaningfully affect a listener's overall enjoyment of their system.  System warm-up probably falls somewhere within that hierarchy but, even though I am sure my new tubed DAC sounds best with at least 30 minutes of warm up doesn't mean I don't enjoy the sound of it as soon as I turn it on.  There should probably be another step in the hierarchy asking, "do you obsess over it?"