Thanks for your suggestions. I need this for my company PC (desktop Dell Optiplex 380) I have speakers plugged into the PC and headphones plugged into the speakers. This is to easily control volume as the dictators are varied..some are loud, some are soft, so I am constantly turning the volume up and down.
I am not "looking for cheap." I'm willing to pay for a good soundcard, it just has to be external. I am not authorized to open the PC to put in an internal sound card. I am not even sure this PC has a PCI slot as Dell custom built these to my company's specs.
I listen only to voice files (no music). I am just sick and tired of straining to hear the dictator because everything is so muffled. I can play these same voice files on my personal PC and they are very clear - I am just not allowed to use my PC due to HIPAA regulations.
Thanks so much for your help.