I recently got my MBP and I noticed there's a issue with headphone audio distortion. When I plug in my earphone or headphone without any sound playing, there's a clear whining noise like zi zi zi sound which is really clear, sounds like old 80s radio noise. when I play the music, of course it was covered by the sound of music but it really bugs me out knowing that I cannot listen the pure sound of my music. The volume of this distortional noise would not change while I turn up or down the volume of my MBP. I asked someone professional, he said it's a famous issue of screen frequncy disturbing audio in macbook pro. So, my question are all or most of MBP like this? and how should I fix it? . thanks a million. PS. I made sure it's not problem of my earphone/headphone.