Currently my setup looks like this
Mac Pro Optical Out -> Keces DA-151 DAC -> Cayin HA-1A -> Sennheiser HD-650/(coming soon)Swan T200b.
But I'll want something that is like a switch to choose which one I want to listen through. Would DACMagic be right for me? I may get another amp to connect to the speakers, but first I want to solve this problem since the speakers are already powered.