For mid-level gear, the addition of Dakiom "Audio Feedback Stabilizers" actually creates a more three dimensional soundstage among a number of audible improvements.
This is not to say that all the appropriate recommendations above will not get you there as well. But, as a "quick fix" to get you started toward your goal, Dakiom is easy to recommend.
Some of the Dakiom ads here on Audiogon (which you can read by typing in "Dakiom" in the search function) come across as highly opinionated, even controversial, yet the excellent audible results are achieved at modest cost.
This is not to say that all the appropriate recommendations above will not get you there as well. But, as a "quick fix" to get you started toward your goal, Dakiom is easy to recommend.
Some of the Dakiom ads here on Audiogon (which you can read by typing in "Dakiom" in the search function) come across as highly opinionated, even controversial, yet the excellent audible results are achieved at modest cost.