personally i agree with what was said by ilike beanonymous i removed the fluff nonsense about resonance which has little if anything to do with how a soundboard works resonance is a specific aspect of sound mechanics which has to do with the frequency of maximum amplitude of a system what happens with a soundboard is actually much simpler it has a larger surface area than a string alone and therefore can move a larger volume of air hence a higher volume of sound ilike beanonymous the term amplify is definitely true when it comes to the soundboard i'm currently studying to become a pianotechnician myself and i would be very interested to hear your professionel explanation for saying that the soundboard does not amplify anything as far as i know the word amplify has been used for a lot of non electrical things for a long time now so i don't really see your point there either care to elaborate