jamato8
Headphoneus Supremus
I know what they are supposed to sound like. Well, we can agree to disagree. My reference is live music and the sound of it. And no way will the AMP9 in high output mode not power a number of headphones into very good range and louder than I would want to go. PortaPros on regular output works fine and in that mode, they can go very loud.Yes very. We both have very different ideas of how those phones are supposed to sound like. To me it has nowhere near enough power for anything more than Porta pro with all settings high gain. As stated before the reason for running hd569 with it is for its the best impedennce/sensitivity wise can handle with acceptable results.
If you want Porta pros to sound quiet and like iem's then sure low output sort of works. But to sound anything like they are intended to sound. Both settings need to be high. As stated my hd480 won't even get close to acceptable levels.