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It does make sense. Thanks for sharing.I have bought LOADS of used equipment which had more than 35 years of dust collected in them. So far I never encountered anything which was damaged by dust. After 30 years caps and other components can go wrong, which has nothing to do with dust. The components that need heat dissipation always will have the fins in vertical direction which prevents dust to collect on them affecting the performance. Rarely some dumb guy would put heatsink in a way to collect dust in horizontal position. I think dust on other components makes a good cover to isolate them from atmosphere even! Other than aesthetic reasons there is no reason for which an amp must be protected against dust. CD players lens, tape recorder heads and so on are a different story. There are lot of ways in which an amp can get damaged, dust hardly makes up to the list. Like I mentioned earlier, moisture can damage components, not sure about the most modern PCBs
Thats a good idea, but silica gel has a shelf life and gets saturated faster if kept in a room, and to absorb the moisture around an amp u need hell lot of them considering the fact that u need 200gm of silica gel for every cubic meter u want to protect. In a closed container there is very limited humidity coming through. In a room, this is considerably high, which means the gels get into saturation faster and can no longer absorb moisture.I use silica gel packs around the electronics and it seems to work in preventing moisturisation.