My 7506 has a higher sensitivity level than what the amp. recommends (<100) and I hear buzz/noise all the time. Is there any modification to solve the issue?

Hi! I just get started in feeding the MP5 with computer source. I ripped using EAC in FLAC. Just installed foobar2000 with ASIO4all plug-in (and program as well). It's a bit too technical for me even after reading the instructions. Can anyone help by telling me how I should setup foobar2000...