My studio rack consists of a Studio 1824, Digimax DP88, Central Station Plus and HP60 along with a Furman PL-PLUS DMC Power Conditioner. The connection diagrams in each of the owners manuals tend to have different information that doesn't always match up. The HP60 says to use a "Direct Output from DAW" for the vocalist and bass guitar and plug them into the respective stereo ext. inputs in the HP60. But how can I do that when there are no obvious direct outputs for those lines?