ok so i just inherited a bunch of recording stuff including a diamond studiomaster pro 16-4-3 mixer. its pretty old but not bad for my first mixer. first of all, im guessing the 16 in the number 16-4-3 refers to the 16 lines or inputs or whatever that it has, but what is the 4 and the 3? also, do you think that the owners manual is floating around anywhere on the internet that i could get my hands on? id love to see this thing's capabilities.