Shure e3c in ear plugs for monitoring audio
 

I just got a pair of e3c's (for my ipod actually), but I've found they work GREAT to monitor my audio. They're not big and bulky like earmuff style phones, they fit in your ear canal and block out all external sound, so everything I'm hearing is coming directly from the mics and the accuracy of the sound is incredible.

The earmuffs are going downstairs to the recording studio.