Here is the stuff I have: Heathkit SB301/401 IC-7300 Heil Pro Set Elite Heil PR40 (on order) Xenyx Q802USB (on order) W2IHY iBox/ Desktop Computer I'd like to be able to have the PR40 as my primary mic with the ability to switch between the SB401, IC-7300 and my desktop computer, I'd also like to have audio output go to a master speaker, and the computer from the SB301 and IC-7300. MIC input: the PR40 will go to the XLR MIC 1 input with an XLR cable, the headset will go to the 1/4 MIC 2 input. Neither of these should require anything more than just connecting with the native cable/plug. Output from the Mixer: USB to the computer, main out L would go to a W2IHY iBox to the 13 PIN DIN ACC on the IC-7300. main out R would go to a impedance transformer and then to the mic on the heath. Audio input to the Mixer: Headphone jack from the IC-7300 to LINE in 3/4 L, Headphone jack from SB301 to LINE in 3/4 R. I should have the option of adding an additional radio as well, possibly an IC-9700 for sat work. Am I headed in the right direction?