Which brand of studio headphone suitabe for SACD mastering? I have some choice: Stax omega II, Grado RS-1 , ultrasone HiFi 650 , Sennheiser 650.Sennheiser HD 25 II, beyerdynamic DT 880 , beyerdynamic DT48 Which one produce clean ,natural and balance sound? What is the differnt between studio headphone and audiophile headphone? I know studio headphone more expensive than audiophile headphone. Is this means audiophile headphone better studio headphone.