SOP- It's the remastered Machine Head. I have an import from the UK, although I believe that Rhino offers it in the states now.

One disc is simply a remaster of the album we all know and love.

The 2nd disc, is remixed. Different guitar solos, song beginings, and endings, drum parts, etc, on a lot of the tracks. It's like hearing the lp again for the very 1st time

The lack of the remixes is exactly why I passed on the DVD-A version...