Bump this thread if there is any new products to add with these 3. I have hd 598 without amp/dac. have 200£ giftcard to amazon uk. Can someone recommed best sounding product for these headphones. Thanks!

After reading more head-fi I'm so lost what to buy next I have 200£ giftcard to amazon uk so maybe something from there. I'm maybe planning to upgrade these 598 to 600/650 at some point, but should I buy DAC/amp first that fits for all of these headphones, like Audioengine D1..HRT micro...

Hi.   I'm new here. I bought hd 598 like half year ago and I was thinking maybe I could improve SQ with amp/DAC? I have soundcard Aureon Terratec 5.1 now. I was thinking about buying Fiio E17 or E12(amp?) + Fiio D03k(DAC?). Anyone have tested between these 2 combo which one is better or...