Headphone jacks emit buzzing sound.

Wireframe2

Honorable
Jan 22, 2014
7
0
10,510
I'm almost certain this is a common problem, but my new Logitech S120s have this persistent buzzing sound whenever I plug my headphones into them.

Incidentally, the same buzzing sound happens if I touch the speaker's jack to my fingertips, except that it's MUCH louder.
 

Wireframe2

Honorable
Jan 22, 2014
7
0
10,510


The problem does not happen at all if I plug it into the PC.

I have definitely secured the cable connection.