Basically, I'm looking to split the signal from the effects send on my amp head into, say, line A and line B; then put all the effects on line A; keep line B clean; and then blend A and B together before going back into the effects return. So, I'm looking for two items basically: a splitter and a mixer. For the splitter, can I just use a Y-cable? And for the mixer, I'd like to have a way to control the levels for the 2 signals. Suggestions & advice appreciated Thanks!