After spending countless hours researching and a failed experiment with the Fiio E10K, I need some help . . . I'm looking for a desktop amp (or Amp/DAC) that can specifically handle IEM's, in particular the Klipsch S4 and Sony MDR-7550. I tried the Fiio E10K and it sounded muddy and didn't have ANYWHERE near enough power even on the high gain setting - which really surprised me. This is a strictly office setup, so I'm not looking to spend big money. My current setup is: desktop computer > Schiit Modi > Logitech Z130 > Klipsch S4 into the headphone jack on the Z130. It honestly sounds halfway decent, but lately I've been getting some pops/dropouts and I'm not sure if it's related to the Z130, Modi, or the motherboard. Either way, I feel that improving on the Z130 for amplification shouldn't be particularly difficult, even for less than $150. Naturally I'd lean towards the Schiit Magni or Fulla, but I've read a few negative reviews on both considering IEM use. Somebody please point me in the right direction . . .