DAC/AMP help for multiple headsets

[Freddster]

I have 3 different devices I want to change between. I currently have a Sennheiser G4ME ONE, a HD6XX in the mail and an old surround sound cd/radio player. Currently I have the G4ME ONE connected in the back of the motherboard, and the surround sound player connected in the front via a mini jack to RCA. The problem more or less is that when I receive the HD6XX I want to be able to change change between that, and the other 2 devices fairly easy. This is so that I do not have to go around to the back of my computer each time, and change the pluged in cable there (this is assuming that better audio quality is achieved from this, rather than the front IO). I have tried to look around on the internet to see if there is an AMP/DAC that also has a mic input, but have not had any luck with this. 

 

So the question is if there is anyone who is able to recommend something with mic input, or if it would better to get a DAC/AMP without the mic input, and then get a mini jack extension cord for the G4ME ONE mic, and leave it pluged into the back of the computer all the time. If the later is the case, is there a DAC/AMP that is people is able to recommend (max $300), that will serve well with the HD6XX.

[Stalingradus]

This is very strange: I have a similar issue and I came here just in desperation, because I can't find a headphone mixer which suits my needs (3 inputs and 2 outputs)

 

I underlined that part because all the headphone mixers I found feature at least 4 outs and 1 in, plus they cost a ton of money

[Himommies]

Get the element and a extension cord

1 minute ago, Stalingradus said:

I underlined that part because all the headphone mixers I found feature at least 4 outs and 1 in, plus they cost a ton of money

Have neither of you heard of the term audio interface