There is a huge amount of unspecified details. I have recently changed pads on my Beyerdynamic DT990s from cloth to leather. I had to quickly revert back. The s

There is a huge amount of unspecified details. I have recently changed pads on my Beyerdynamic DT990s from cloth to leather. I had to quickly revert back. The sound became very boomy, practically unbearable. I suspect the tight seal provided by leather to be responsible.