PurpleAngel
Headphoneus Supremus
Then I'll add that one too.
Just one last question, is there any kind of DAC that holds up to the GD-15 both in price-performance, and can be bought on the western market preferably within the EU.
Read a bit about warranty on the Audio Gd homepage and it said that they offer 10 years of warranty BUT after the first year you pay for shipping costs both ways, could be expensive.
I really doubt you would find anything in the EU close to what the NFB-15 offers and anywhere near what the NFB-15 costs.
Also on Head-Fi you really do not see any negative feedback (at least I do not) on Audio-GD, product or service wise.
You would pay around the same price for a EPH-02D1 (ODAC/O2) combo unit,
http://epiphany-acoustics.co.uk/products-page/dacs/ehp-o2di-desktop-headphone-amplifierdac-3/
but it would only come with USB input and the S/PDIF (optical & coaxial) input on the NFB-15 works with sound card features (like headphone surround sound).
USB bypasses sound card features.