Can a high end SSP compete with a high end DAC?

I'm currently using the dac in my Meridian G68 surround sound processor for music listening. I'm happy with it, but I sometimes wonder how it would compare to freestanding dac's that cost, say, up to $5000.

Does anyone have experiences that might give me some idea of what, if anything, I am missing?
Wouldn't it be more fair to compare a Meridian DAC to the G68 first?
Elevick - Yes, that makes sense. Not something I call manage at the moment, I'm afraid. I was hoping that people might have some experience of the sort, "I had SSP such and such, changed to DAC so and so, and x and y improved." But your idea is a good one.