Hi, i wonder if the Sony MDR-SA 5000 is giving a good sound directly out of my soundcard Audigy 2 ZS while it hasn't a very high impedance (70 ohm) or do i really need an amp for the use with my PC ? If so, would the new Porta Corda MkIII-USB a good solution? Greetings Stefan

Hi, I just found an amp for the use on a PC on meier-audio for 280$: Porta Corda MkIII-USB. The advantage of the MkIII-USB is that it bypasses the soundcard. Is it good with the use for the HD 650 ? Is there a better alternative for the main use on a PC when using the Audigy 2 ZS soundcard for...