Dual Audio to headphones?

[WeApOn]

I have a keyboard and a computer that I use headphones with. I'm constantly switching between the two, and it's a hassle every time to switch the input on the headphones. Is there a device that I can buy that will have a female port on one end, and either two male cords, or two more female ports that I can use male cables to plug into both?

Thanks.

 

[Microtomer]

The only thing I can think of is a mixer. But that might be kind of expensive. I don't know if there is a simple cord to do it.

Something like this:
http://www.markertek.com/Audio-Equi...ive-Audio-Mixers/Rolls-Corporation/MX51.xhtml

 

[maceman]

Small mixers are not very expensive. I bought a new small mixer couple years ago and it was 30€. And that is the price in Finland, which is pretty expensive country.

It has 10 channels, 2 mic bus mic/line, phantom power and an effect link.
Most of the modern mixers are pretty good, no noise

 

[proximity]

I use headphones with. I'm constantly switching between the two, and it's a hassle every time to switch the input on the headphones. Is there a device
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[WeApOn]

I ended up using a simple non-powered A/V switcher that I had laying around. This was a perfect solution. Obviously I didn't need the video portion of the switch, so I just left that unplugged.