I was unimpressed by the quality of the sounds on this USB stick. The profiles themselves are average at best. A few of them are pretty good, but most are nothing special. Nothing you can't simply get from the rig exchange for free at least.
Also, for some reason they are all very loud compared to other profiles.
The tagging on the profiles is basically non-existent, so you don't know what amp this came from or how it was mic'ed. An effort to at least fill out all this extra data would have been nice. The rig names are cryptic and all-caps, which just seems sloppy to me.
I ordered it together with the KPA, so it was only 10 euros, which made it more or less worth it. I don't think it would be worth the full price of 48 euros. Sites like the amp factory give way higher quality for similar prices.
In conclusion; It's a nice addition to the default rigs in the KPA so you have some extra options, but that's about all there is to say about it.