Is it possible to have a headphone monitoring the Canon EOS 5D Mark II (reviews) or other HDSLR that doesn't have magic lantern installed? Well, this solution seems to give you that option. I haven't tried it.
I have found a solution that works for me… and cost only about 37$.
My need was:
– Simple to setup
The source of this is the post from Cristian Sundsdal here (translated by google). In that post he also gave us this diagram:
(cover photo credit: snap from the video)