Hellooooo Head-Fi. I'm looking for an AMP/DAC/Sound Card for my Sennheiser HD598s. By no means I am a audiophile but I've had my HD598s and ASUS Xonar DG sound card for a while now. I'm looking for a way to improve sound quality in any way. My budget is $150-200 AUD. My options so far - 1. Fiio E10 ($100) 2. ASUS Xonar D2X ($190) I believe you don't really need an expensive amp, etc to drive the HD598s so my question is how much better are my two options compared to the ASUS Xonar DG? Will there be an improvement in anything?