Need help coming up with an audio solution for PC and PS4 under one mic and headphones

[iPhantasy]

I'm not sure this is the right section to ask this under, but if it's not hopefully someone can point me in the right direction.

 

Lately my family and I have started playing a few games on PS4. My goal is to have everything under one microphone and pair of headphones. Currently I don't have an issue when I'm playing solo games by myself because I'm just using the preview from the AverMedia REC Central to get video and audio. I'm not looking to live stream with the setup or anything. I am just looking for sheer convenience of being able to use one audio listening device and one microphone for everything. From what I understand I would need a mixer of sorts to achieve what I need but I could be wrong. Can anyone point me in the direction of a few mixers or what I would need that could get the job done? This may all just sound a little overkill or crazy but I would appreciate any help or guidance. 

 

List of current hardware that I am using.

Audio-Technica AT2050 microphone

Sennheiser 598 headphones

Universal Audio Apollo Twin USB interface

Audio Engine A5 speakers

AverMedia Live Gamer HD

Astro A50 Headset for PS4