[12796]

Sent them back to seller mate; either fake of just not very good.
I bought another pair for Amazon but they failed too. Not sure if they are not robust or I was unlucky. I only buy gear with removable cables now

It seems to be a common problem with these. I did the checks to make sure they are not fake

 

[beardyweirdy]

I wouldn’t buy K3003 without a purchase receipt; don’t think I would buy again anyway, despite the great sound as I don’t trust the fixed cables