Let the hive mind of Engadget get that for you.
"I'm looking for a pair of quality headphones that aren't seemingly made of glass. I'm an avid BMXer which causes me to frequently bash on any type of technology that joins me for my daily riding. I've been through the higher quality headsets in the Skullcandy line as these are supposed to be built for "abuse," which is laughable. I cant wear earbuds or canal buds, as my large ears seem to have a repelling property upon anything that sits in them. Wired or Bluetooth doesn't really matter, but I need something that can hold up to taking a few hits every now and again. I'm trying to keep 'em under $150. Thanks!"
Oh no, here I go again.
I'm sure the 4400 is like the 5300, in that the 2nd zone can only use component, s-video or composite plus audio. You can configure the rear surround amps (the ones only used for 7.1 audio, not 5.1) to output the 2nd zone audio amplified. The 3rd zone is audio only.
The 2nd zone does no video conversion, so if you are inputting HDMI you will get nothing out the 2nd zone video. If you are inputting composite you will get nothing out the 2nd zone component video jacks.
Basically, think of the additional zones as audio only.