I meant to add that my eVic (as much as I DO like it) gives funky Ohm readings. As in, the reading for some heads for some devices will change every time I take them off and immediately put them back on. Sometimes it goes down, sometimes up. I've had a few eVod heads that were apprx 1.5Ohm read 3.0 Ohms, then 2.7, 2.5, 2.9, and then maybe 1.5. I've never seen it read a device as having LESS resistance than it's supposed to have, only more.