I have been using my HD 598 with the Asus Xonar DG soundcard for a couple of months now, and it sounds "fine", but i am looking to upgrade to a dedicated USB Amp/DAC.
The Cambridge Dacmagic plus looks like a good option and can be acquired for around 350$ in Denmark where i live. But are there cheaper alternatives? 350$ is really the maximum amount i can afford to spend right now. Portability does not matter, i just want the biggest upgrade possible over the Xonar DG. :)
It would be very nice If the device you are suggesting is available on the UK Amazon, or other stores within Europe.
Thanks in advance!