Good thing the thread's still alive.
I was looking to buy the NX1 as well and based from what people said here, it is safe to assume that the amp does it job really well, aye?
It's 35 euro here in ebay.de and it's a good price to pay to replace my FiiO E6 (that I start to doubt its performance compared to bigger portable amp).
Yes...it does it's job well...