Device to "mute" 3.5mm mic

[jamesrb]

I was thinking about getting an Astro Mixamp 5.8 to use on the PS3 with an analog headset. Is there some kind of simple switch I can put on the 3.5mm line between the headset's mic connector and the mixamp to give the mic on/off functionality? I am sure people can easily make one, but I was looking for something to purchase. The drawback of the mixamp seems to be that the mic will always be open.

 

[Impulse]

You could get a 3" 3.5mm extension that will effectively mute the mic because it's split for two channels only so the mic's just gonna get ignored... (two black lines on the jack instead of three) I thick you're probably looking for something that will actively let you mute and unmute at the flick of a switch tho, nothing pre-made like that comes to mind tho.