For about two weeks I had beigh fluff all over my house, on my clothes, and covering my socks. However, the software loop back can be disabled and instead a zero-time loopback can be activated very easily by disabling software monitoring. I wont even go into the FiiO - its awful in my opinion and I eventually uninstalled it. Installation was quick and easy. I actually just ordered this again. Ive been buying these Dearfoams every few years and the size 7-8 medium-width slippers have always fit my size 6 wide feet. I wish I had not purchased that style. I have had 10-14 days between overnight hostel stays, so I believe this will be a great addition to the pack. I contacted plantronics and they didn’t care, just told me to return it if it didn’t do what I thought it would. So, the sound quality is quite good when you use the presets.