I got my balanced silver cable today. I use it for my AK100II. I didn't really notice direct improvements so far. I listened to the songs that have specific features that stand out. The balanced output on the AK100II seems to have a much lower volume output. When I go balanced, I need to turn up the volume. When I did, I didn't hear improved sound. At the same volume level, the stock cable has a very impressive sound while the balanced setup sounds veiled and weak (bass, mids, dynamics). I don't like to increase the volume, because it's already at 48 out of 70.
Using the stock cable, level 48 is so loud that I often lower it. I don't blame the cable as it's pure silver which is as good as it gets. I think the balanced out of the AK100II leaves a bit to be desired. I expected it to have more or less the same sound with a completely black background.
I will test some more. It's hard to switch cables for comparison, because I don't want to wear down the connections.