Just tried Recon mode and its pretty amazing, it really takes out the footsteps and weapon sounds and makes them louder. This is also true for your own foosteps so until your not Ninja this does not make much sens. Not sure if I like it but its not bad at all!
After playing some more now this is just enough to drive 250 Ohm, dont need it louder. Any gaming headset crap from turtle to Astro will work fine as they are 50 and less.