Contrary to all the rumors, there’s no such thing as burn in. Capacitors form in a matter of seconds and bias stabilizes shortly thereafter. A correctly designed amplifier sounds just as good in hour 1001 as it does in hour 1. But sometimes loudspeakers sound their best once they’re broken in. This can take anywhere from a couple of hours to a couple of days.
Read the full article here:
Is Burn-in a Lie?
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?