I have been spending hours doing research here and elsewhere and have not found conclusive answers to several questions.
Im ordering a new computer in the next few days running Windows x64 running foobar and need to decide if im going the PCIe soundcard route or USB dac/amp.
If you can give answers to any of these questions I would be extremely grateful!
Equipment:
Ultransone Pro 900's
1. PCIe (Xonar STX) vs USB 2.0/3.0? have found no definitive answer.
2. If USB what option is best? Nuforce icon HDP, Audio-gd nfb-12 or musiland 03 us? All of them would be used as a standalone DAC/ Amp...The HDP can handle this or requires an extra amp to run the 900's?
3. My Mother board has S/PDIF out my understanding is that with Optical I cannot actually use the DAC of whatever I may be attaching. How do I utilize this?
Thanks for your time and my apologies if any of these questions seem stupid, im new to this and looking through forums and old articles endlessly has left me a bit confused.

















