1. I got a pair of HD6XX from the first run - what type pads are on those??
2. I just ordered another pair - what type pads will be on those?
3. What type pads come on the Sennheiser HD650 (which is the equivalent, right).
4. What does fenestrated mean?
5, What foam are the questions about whether the pads come with foam referring to? I want to know how to replace the thin foam that covers the speakers; that will also wear out too.