Interesting. I just replaced a pair of generic ic's that I was using as a phono cable and from the phono amp to preamp with Audience Au24e cables yesterday. Quite the coincidence.
I do find the highs to be more extended and more details. The soundstage also seems to be improved with instruments being more separated from each other.
I wonder if a low z phono cable would improve this further? I am going to have to live with this cable for a while to see if I even need to upgrade. It sounds pretty sweet right now. I need to upgrade the cable from the preamp to the amp first, though. I am using a Rocket Fish cable right now (yech). I think I will try a Black Cat Lectraline cable as I need at least a 4m cable (probably custom made).