The only metal I know of that is liquid at room temperature is mercury. Your guitar will become an instant hazmat site. And the pins will dribble away depending on its position.
+10 dB is considered to be twice as loud subjectively. A 4 dB change is on the fringe of being noticeable under most conditions to most listeners. 40 dB require a pickup and an amplifier. Anytime someone reports "....40 more dB's...." you can immediately tell that they don't know what they are talking about.
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