A change in interconnect cable certainly can improve imaging, but, if you are having problems in that area, it is not likely to be a cure. In other words, you really have to get everything right to get terrific imaging and there is no way that making changes in one part of your system can compensate for inadequacies in others.
First and foremost, you have to get speaker placement and placement of your listening chair correct. Taking care of this can turn almost any speaker into an imaging champ. I've heard remarkable imaging from a vast variety of speaker types, sizes and shapes, and it mostly comes down to correct placement. This is too broad a subject to get into the details, so you need to do some research, and mostly, a lot of experimentation with moving things around. Room treatments can help, but, placement is the key. Also, it is simply not realistic to expect great imaging in anything but a tiny listening window unless you are using omni-directional speakers. Even then, the ideal spot will only fit one listener (the two dedicated listening rooms that had a wider sweet spot than one person were gigantic--around 30' x 55').
Electronics certainly matter, and the best gear at giving one a sense of a sound-field that is completely enveloping the listener tends to be tube gear, particularly low-powered tube gear (e.g., single-ended triode amps). Whether or not this is an artificial thing with tube gear, it certainly is seductive.
Once you get everything right, it is pretty easy to hear differences in cables and some wire tend to do certain aspects of imaging right. But, as with anything in audio, any choice tends to involve some tradeoff (no one thing is superior in all aspects of performance). For example, some wire that sounds very clean and detailed, will tend to be very precise in terms of image placement, but, that type of wire tends to be tonally thin and this detracts from the sense of the sound filling the entire listening space. Finding the balance that fits your priorities is the key.
First and foremost, you have to get speaker placement and placement of your listening chair correct. Taking care of this can turn almost any speaker into an imaging champ. I've heard remarkable imaging from a vast variety of speaker types, sizes and shapes, and it mostly comes down to correct placement. This is too broad a subject to get into the details, so you need to do some research, and mostly, a lot of experimentation with moving things around. Room treatments can help, but, placement is the key. Also, it is simply not realistic to expect great imaging in anything but a tiny listening window unless you are using omni-directional speakers. Even then, the ideal spot will only fit one listener (the two dedicated listening rooms that had a wider sweet spot than one person were gigantic--around 30' x 55').
Electronics certainly matter, and the best gear at giving one a sense of a sound-field that is completely enveloping the listener tends to be tube gear, particularly low-powered tube gear (e.g., single-ended triode amps). Whether or not this is an artificial thing with tube gear, it certainly is seductive.
Once you get everything right, it is pretty easy to hear differences in cables and some wire tend to do certain aspects of imaging right. But, as with anything in audio, any choice tends to involve some tradeoff (no one thing is superior in all aspects of performance). For example, some wire that sounds very clean and detailed, will tend to be very precise in terms of image placement, but, that type of wire tends to be tonally thin and this detracts from the sense of the sound filling the entire listening space. Finding the balance that fits your priorities is the key.