Solude
Headphoneus Supremus
You mean the braided cable? It's a cable model common to all the late ER-4S & ER-4P(T) series.
Now yes, originally no. Also the PT comes with the PtoS where the S obviously does not. In this case it turns out to be a P which had the modern cable but no PtoS. Semi rare to be honest. Both the P and PT are marked ER-4P on the split. Hence why I said likely and not definitely.