Hi Mike. I see what you are trying to do. You want to use the mike on the mixer and at the same time use it on the PSR2k while taking the mixer line out to somewhere else. Using a send output will do it. Just connect it to the line in on the PSR2k. It's a mono unbalanced input with the parameters I gave. It shouldn't load down the send output too much. Since the input volume control on the PSR is directly connected to the line input it doesn't matter how high the mixer send level is as you can adjust it right down to zero. The best adjustment is when the red over light is occasionally coming on. There's an 18db difference between the signal and over lights and the input isn't being overloaded until it's several db over the level at which the over light comes on. Hope this isn't too confusing.

Bryan