Hear a little bit of noise with my IEM. The noise is there even if the amp is not connected to my computer. It's not obvious, the noise go away when there is music, but it is noticeable when the music stop
flying_hippoTry ‘isolating’ the amp away from all electronic devices (like your computer equipment, Tv/monitor, ANY electrical equipment. Use a dedicated ac wall socket with nothing else plugged in to that outlet. I would go as far as to buy a Triplite ac power conditioner. Instead of looking at this amp as $40+ device, see it as a $4,000 tube power amp. Folks like myself that own d such equipment approach and set up that type of equipment like it was a $500,00 racing Porsche. When on set up a Audio Science, Macintosh or equivalent tube power amp that amp will be separated from the pre amp, audio player etc TO THE EXTREME. Spend a couple extra bucks getting higher end idiot connectors. Oh, and most all tube equipment needs a burn in period (to break in the ‘stiff’ tube). I have 50 years buying selling and owning high end audio gear. If you do all this I think you will be amazed at the results. Namaste