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Questions about tubes and gear that glows. FAQ

Re: why do tubes go microphonic?

Microphonics usually happen when the internal structure gets deformed by heat or shock allowing for the plate structure to vibrate. This can happen slowly over time or quickly in extreme operating environments. If a piece of equipment is running a tube near or above the rated limits, the tube will be more prone to microphonics earlier in the tube life. Some tube types are more susceptible to the problem than others.


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