Hey folks, just an update on this machine. I put it to work the other night with a set of Austrian Audio OC18's. They draw 2.2ma's I got over 6 hours on it with the batteries shown in the picture with the display on. I figured I would show you a couple pictures too. The scroll wheel menu system is much better than the F3's Very intuitive. Didn't need to break out the manual for anything. Thinking I am gonna like this one for quite some time. The cover for the onboard mic attachment is a nice feature. Looking forward to getting it in the field.