Ordered this thing from Germany, it arrived well packaged and without any issues. I will order from Audiophonics again if I ever need something. The prices are more than competetive and the service was nice and answered all my questions about the product.
The amp itself performs very nicely, but keep in mind that some USB ports could carry over some interference issues to your DAC and then to the AMP. Via USB I had some weird electrical buzzing, an optical cable fixed all those issues, so keep that in mind. This is not really an issue of this amp but more an issue that could happen with any computer and an AMP that is sensitive to picking these things up (this includes stuff from your phone too).
About the amp itself. Music sounds fuller with it, I am pairing it with the 650's from Sennheiser and it's pleasant. The transformer of the TA-26 can hum a little, mine does it but it's not noticeable when listening to music, but that's to be expected with a transformer like this (might be fixable so it's completely silent). The tubes are completely silent when not listening to anything, no humming, buzzing or microphonics in my case, so that's very nice.