Andrew Everard:Well, since you'll be listening on headphones, airborne vibration from the system won't be a problem, so unless you dance energetically, have a valve driven headphone amp or live on a main road/railway line/flightpath, I doubt it, honestly...
I suppose one could support one's headphone amp (and one's own head!) on a Tescos Finest Granite worktop protector with sliced up squash balls underneath. It seems to be the favourite recommendation for equipment support around here and only costs ten quid (plus balls).