Physical audio mixer

[Guest Gary-Motherfucking-Oak]

Hi all! for my headset i currently use a plantronics rig. (Feel free to judge me). The headset is now getting a little worn with the cables having reliability issues and the sound quality was never the greatest. 
The one thing stopping my from buying a new pair of headphones plus a new microphone (Thinking about the Editors Keys SL600) is because i really love and almost need the physical mixer sitting next to me. I find software mixers fumbly to use and i have to minimize my games to adjust any of the tracks.

Are there any other options?
Or do i need to use the mixer from the rig with a new set of headphones (3.5mm)? If so, what could you suggest?
Just so you know, i need atleast 3 inputs on the said mixer.

[laxer]

I grabbed this mixer 2 drops ago on massdrop for ~$25

 

It only has two separate sources but for the price I am very happy with it.

 

I use it to mix my computer and game audio.

 

Doesn't exactly fit your needs but is a fairly cheap alternative.

[Lolzious]

Well, the only mixer I have experience with is an Allen & Heath Zed 18..

Nothing wrong with overkill though.... Right?.....Guys?...