Why not just buy another inexpensive cd player (make sure it has a different digital out than your Sony Mega changer), and then by a separate DAC?
Most DACs I've seen will accept inputs from more than one source. That way you could experiment with the way different DACs sound in your system.
Most DACs I've seen will accept inputs from more than one source. That way you could experiment with the way different DACs sound in your system.