Amazon.com: TruVoice Agent USB Headset Training Solution for Computer and Softphones (Includes 2 x HD-150 Headset with Noise Canceling Microphone, USB Cable and Training Y Cable) : Electronics
Using two headsets on one PC - Why You Can't Use 2 Headsets on 1 PC
How to use TWO pairs of headphones at the same time on PC! - YouTube
Using two headsets on one PC - Why You Can't Use 2 Headsets on 1 PC
How to use two USB headsets on a PC without a splitter - Quora