Wirelessly posted (boobies: Opera/9.80 (Android 2.3.7; Linux; Opera Mobi/ADR-1110171336; U; en) Presto/2.9.201 Version/11.50)
You can just do that with a Y cable dude.
I tried a Y cable once and it sounded like, well, only half the signal was going to each piece. I'll try it again. Maybe the splitter or one of the cords was the problem.They call them DIs, run the XLR out to the desk, run the 1/4" out to the amp. A Y cable would also do the trick too.