Quote:
Originally Posted by
wind016 
The Ultrasones maybe pretty bassy open phones, but boy did I find them shrill and sibilant (i loved the closed variants tho). Maybe a tube amp would be ideal for them?
I thought the same and I didn't think the tube amp helped them very much. But then, apart from the hfi680/780, I am not much enamoured by the ultrasone sound sig in general.