So Ive been looking at purchasing a soundcraft ghost 32 by 8 mixer. What I need to know is can I hook up my computer to it? Do I need an interface? What exactly do I need to use it?
I have one. There are many reasons why you would hook it to a computer, some of them you need an interface, some you don't. What do you have now and what are you trying to acomplish?
I have never used MOTU preamps, but a 32 channel board is overkill if you only need 8 inputs. If you were to get the board, you should get at least 16 channels of I/O and use the board in split mode. 16 channels of inputs and monitor on the other 16 channels. You will also be able to mix down through the board, which will give you a different sound than mixing in the box.