This is my new station setup after moving. Nothing too fancy and you can't see the HP4 amplifier.
I like the sound of the apogee and the motu uses the same AD/DA chips as some RME products. The Presonus does the job, does't seem to colour anything which makes me happy, the only down side is 20 Hz to 20kHz frequency range which i leaves me feeling i'm not hearing the full potential of the HD 650.
(Sorry about the picture quality, i only use an iPhone 4)
Maybe I don't know because I'm new, but why would 20hz-20khz not let your HD650's reach their full potential? As far as I know that is the human hearing range.