Greetings to all. I have a question regarding the stock audio output on the newer 8-core Mac Pros. The 1/8"(3.5mm) stereo "Line Level" output minijack. The manual lists a max output level of +6.3dBu, or 1.6Vrms, but does not list which standard the jack conforms to. There are 2 common standards when "Line Level" is referred to: #1. -10dBV (common amongst consumer products: CD players, etc) #2. +4dBu (common amongst professional keyboards and MIDI modules) I have had no luck searching various Mac forums, nor googling... Does anyone know which standard the "Line Level" output jacks of the Mac Pro conform to ? Thanks for any responses.