Hi there. We decided to move on to ableton for live processing vocals on stage. We found that ableton provides many effects which can be used in many different ways. Currently we've got Ableton 9, Line 6 digital wifi mic and NI AUDIO KONTROL 1 sound card. Everything is ok in my home studio, but once we go in the club and plug in our gear in the sound system we have alot of feedback. I can see that mic's low frequency is major problem, so I cut them down a bit, but then the vocals sound non-naturally. Then I found this video View: http://www.youtube.com/watch?v=NX_drnUQw_Y What he says is that we need D.I. box and TC helicon voicetone correct which has a preamp and compressor. The problem is that our budget is not so big and we have to buy only one of those for now. Does anybody have any idea which one of those is much more necessary? Thank you very much.