hi, I use voicelive 2 with audya and it work very good. as you know voicelive 2 is the big hof tc helicon, but you can use the little model too. I have connected to the 2 micro in (1 pan to left and mic 2 pan to right) it work very good because I use noise gate and compressor too of voicelive2, the audya compressos is very very bad and not has noisegate. the only different is that with harmony control volume you cannot change the volume of voicelive 2 but it has many program step to memorize different level end effect. I like auyda, but the ketron is the bad bad vocalist I hear and microfon processing too