This typically happens at the peak of her voice. Is this normal? Has anyone else experience this, or do I need to take it to Sennheiser for replacement.
I've seen this when they're powered directly from my Macbook Air or iPhone, as well as when powered from my Miniwatt amp.
Also, an aside, but does anyone know if the HD 201's are voiced like the HD 650s? If yes, then I think I'm tempted to pick those up.