They're called "MoreMe" headphones because they bring out the detail range of frequencies that you need to hear when you're tracking. "MoreMe" headphones use 32 Ohm, 2-1/2" drivers (a little over 60mm), so they'll work with almost any amplifier and you can use several pair without loading anything too hard. They can hit 105dB (loud enough to cause ear damage). They have a "Stereo/Mono" switch with easily detachable earpieces, so that two people can use one set of phones (for recording choirs and backup singers). They also have metal adjustable earcup holders (not plastic), so you can bend them to clamp on your head really tight. The MoreMe's have pretty decent isolation as well.
The Deluxe version has extended low-end and a smoother response overall. They also have L/R indicators on the earcups. These come with a permanent 1/4" stereo plug.
Units have 6 month factory warranty.