I received Will's Decware Silver Ref IC's (thanks Will!), along with the Tripp Lite Isolation Transformer, early today.
First impressions (on the IC's) are better detailing/transparency and better bass. I couldn't help noticing also what seems to be a slight tendency to the bright side: Acutes seem more so than ever (some Art Pepper's highs, for example). Also, I found some female vocals are more 'on your face' than with the previous cables.
I also could not find them particularly airy, and I think this is due to the limits on my existing setup. Let me speculate here: There's so much more analog information getting through those cables now that the signal is reaching the point of saturation for my current amplifier and speaker combo's resolution.
In other words, I'm under the impression we have reached a resolution bottleneck which starts to show the amplifier/speakers' limitations. For example, even though the sound is richer in detail, this seems to clutter the end result in the more complex passages. As if there is more information being pushed down than what the SS setup can handle properly.
I'm beginning to believe that not only hi-rez amplifiers and speakers demand good quality cables, it also works the other way around. Right now I have very good sourcing/DAC signals and if most of this is reaching the amp (through the new IC's), some of it is properly reproduced, but the rest is just not getting processed right. The overall sound has definitely improved, as described earlier, but my ears are now demanding higher resolution down the road (after the IC's).
All of the above is relative to my existing SS/Speakers combo, of course, and will hopefully improve tremendously with the arrival of the Mini Torii and DM945's, some time early May.