Yes, the original headband is too thin for this cups, the next evolution is a new headband, I don't know how to do it.
I heared these headphones for a little time, IMHO they have a sound similar to the PS-1, but with less resolution that the PS-1.
:)
This headphone has a similar weight than PS-1.
Some time ago I've sent these headphones to Torpedo, he has a PS-1 and can make a good comparison. He can tell us the differences between these headphones.
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Rodrigo