Hi Eric, how have you been?
Actually, I've had two instances when cables did make a difference. First, was when I swapped out a pair of biwired DH Labs Silversonic T14s for a biwired pair of Analysis Plus Oval 9s. The APs were much fuller and more natural sounding. The Oval 9s have since remained in my system.
The second instance just happened last week. I replaced three Absolute Power Cords with three Virtual Dynamics Power 2 cords. Vaavoooooooom!!!! I am still in awe of the difference. Soundstaging has opened up immensely, both in width and depth. Music is more dynamic AND smoother. I have never experienced this combination before. And overall volume has seemed to increase. I can't explain that one.
As for components making a difference in soundstaging? When I changed my Sonus Faber Concertinos for ProAc Tablette 50 Signatures, the first thing I noticed was the contrast in overall imaging and soundstage presentation of the two speakers. The Concertinos had a nice, warm sound, but the Tab 50s exhibited a much larger and more precise soundstage, while retaining much of that warmth. So for me it definitely has to be speakers.
Eric, thanks for recommending Rick's cables to me. I'm thinking of possibly doing the entire Audition cable package swap.
Good luck.