Stringeen, I only listened to Class "A" in emporiums that had room treatment up the "Ying Yang", and I was never disappointed. However I have listened to Class "A" rigs in homes that did not deliver Class "A" sound, I attributed that to the inexperience of the audiophile.
I recall a complete top of the line ARC electronics setup, with Theil speakers that was riveting, sounds that I hadn't been aware of, were emanating from "Santana Abraxas", my favorite album for 20 years, and they were clear and quite audible, plus they were coming from a stationary point in space; this was all in a high end emporium.
I was pressed for time when I visited an audiophile with a Class "A" rig, and couldn't help discover why he wasn't getting Class "A" sound, and I noticed a patchwork quilt choice of interconnects. I am a firm believer in uniformity of interconnects, that's because I see so many different philosophies in regard to the best. So many different, competing ideas, can not come out right.
I make all my own interconnects out of the same wire, except where something special is required, like Phono for example. I realize rolling your own is not for everyone, but they can still achieve "uniformity".
The places I went to had CJ and ARC, so you could arrange these two polar opposites however you chose, that guaranteed you getting the sound you wanted. Those places no longer exist in my neck of the woods.
I know exactly what you mean by "your room"; well I've got good news for you String, I just made a "giant step" without changing one component, and I still can't quite believe it.
Although I've been listening all morning, I still can't quite believe it; my room is filled up with beautiful sound, and I thought I was going to have to get some new big speakers to achieve this. Follow this part of the thread on "room treatment" and be amazed at the result.
Best of luck.