line stage, phono not needed, must have remote.@meiatflask
Based on your budget, our MP-3 line stage is our most likely candidate.
"Sound stage" comes from the recording, it is not "created" in the pre-amp, power-amp, the interconnects, or the speakers.
Equipment can only reveal or hide what was included in the recording. They cannot magically add what was not there. Close miked multi track overdubbed piece o crap recordings are dime a dozen. Nice acoustic balanced recordings are not that common. Few people ask for or appreciate it.
Don’t forget speaker placement and room treatments for minimizing reflections. Reflections will smear the image if one was there to begin with.